Mathematics · Class 12 Science
Ch 8Differentiation — Class 12 Mathematics, concept-first.
The idea of the derivative goes back to the 17th century, when Sir Isaac Newton and Gottfried Wilhelm Leibniz independently developed the tools of calculus to describe how quantities change.
Key concepts
Hover a concept to preview it and jump to its most relevant Q&A.
Chain Rule
Imagine you're assembling a toy. First you put part A into part B, then you put that combined piece into part C. The final toy's position depends on how you moved A, which then affected B, which then affected C.
Most relevant Q&A
In previous exams
How often this chapter’s concepts have been examined — real appearance data, never estimated.
Chapter contents
The NCERT structure, section by section. Open a section to see its questions, then read the concept-first solution.
Introduction
The idea of the derivative goes back to the 17th century, when Sir Isaac Newton and Gottfried Wilhelm Leibniz independently developed the tools of calculus to describe how quantities change.
Derivatives of Composite Functions (Function of Another Function)
So far, derivatives have only been found for 'simple' functions — , , — where the standard-function table gives the answer directly.
Theorem: Derivative of a Composite Function (the Chain Rule)
Theorem (Chain Rule). If is a differentiable function of , and is a differentiable function of , then is a differentiable function of , and
Derivatives of Some Standard Composite Functions (Table 1.1.2)
Applying the chain rule to every entry of the Class 11 table, but with a general differentiable inner function in place of plain , produces the composite-function reference table used throughout this…
Geometrical Meaning of Derivative
The derivative also has a purely geometric meaning, quite apart from any algebraic formula. Take a curve and a fixed point on it at , so .
Derivatives of Inverse Functions
If is one-one and onto (so it is invertible), its inverse function exists, and — as the two illustrations below suggest — the derivative of the inverse turns out to be closely tied to the derivative o…
Theorem: Derivative of an Inverse Function
Theorem. If is a differentiable function of with , and exists, then is a differentiable function of , and
Derivatives of Standard Inverse Trigonometric Functions
This section derives the standard derivative of each inverse trigonometric function, by writing as , differentiating implicitly with respect to , and converting the result back into using a Pythagorea…
Table 1.2.1 — Derivatives of Standard Inverse Trigonometric Functions
The six derivatives proved (or set as homework) in the previous section are gathered here into one reference table, each paired with the exact -domain and -range (principal branch) that the formula de…
Derivatives of Standard Inverse Trigonometric Composite Functions, Key Identities and Substitutions
The six inverse-trig derivatives generalise to a composite argument by the chain rule (Table 1.2.2), exactly the way the ordinary trig functions generalised in section 1.1.3 — every formula picks up a…
Logarithmic Differentiation
Some functions are awkward to differentiate directly — long products, quotients or powers of several factors — or are of the genuinely new form , where both the base and the exponent contain ; here ne…
Implicit Functions
Every function met until now has been explicit: (or ) is isolated on one side, written directly as a formula in the other variable — or .
Derivatives of Implicit Functions
Method. (1) Differentiate every term of the equation with respect to , treating throughout as a differentiable function of — so any term containing needs the chain rule (an extra factor of appears eac…
Derivatives of Parametric Functions
Sometimes and are not related to each other directly at all, but each is given as a separate function of a third 'helper' variable , called a parameter: , .
Theorem: Derivative of Parametric Functions
Theorem. If and are differentiable functions of , then is a differentiable function of , and
Differentiation of One Function with Respect to Another Function
If and are both differentiable functions of the same variable , the derivative of with respect to — meaning, treat as if it were the independent variable instead of — is defined as This is exactly the…
Higher Order Derivatives
The derivative of a differentiable function is itself a function of , so — if that new function is itself differentiable — it can be differentiated again, giving what is called the second derivative,…
Successive Differentiation (nth Order Derivative) of Some Standard Functions
There is no single formula that gives the -th derivative of every function — each standard function's own pattern has to be discovered individually.
Sample & Board Papers
Sample papers and previous-year board questions for this subject.
+−Show 42 questionsHide questions42 questions
- Q1If the function $f(x) = k + x$, for $x < 1$; $= 4x + 3$, for $x \ge 1$ is continuous at $x = 1$ then $k =$ (a) $7$ (b) $8$ (c) $6$ (d) $-6$Preview
- Q2If $y = x^x$, find $\dfrac{dy}{dx}$.Preview
- Q3If $y = f(u)$ is a differentiable function of $u$ and $u = g(x)$ is a differentiable function of $x$ then prove that $y = f(g(x))$ is a diff…Preview
- Q4Discuss the continuity of the following function. If the function has a removable discontinuity, redefine the function so as to remove the d…Preview
- Q5If $y = \cos^{-1}\left(2x\sqrt{1 - x^2}\right)$, find $\dfrac{dy}{dx}$Preview
- Q6Derivative of $\tan^3\theta$ with respect to $\sec^3\theta$ at $\theta = \dfrac{\pi}{3}$ is (a) $\dfrac{3}{2}$ (b) $\dfrac{\sqrt3}{2}$ (c) $…Preview
- Q7Find $\dfrac{dy}{dx}$ if $x\sin y + y\sin x = 0$.Preview
- Q8If $f(x) = \dfrac{e^{x^2} - \cos x}{x^2}$, for $x \ne 0$, is continuous at $x = 0$, find $f(0)$.Preview
- Q9If $y = f(x)$ is a differentiable function of $x$ such that inverse function $x = f^{-1}(y)$ exists, then prove that $x$ is a differentiable…Preview
- Q10Discuss the continuity of the following function, at $x = 0$. $f(x) = \dfrac{x}{|x|}$, for $x \ne 0$; $= 1$, for $x = 0$Preview
- Q11If $y = \tan^2(\log x^3)$, find $\dfrac{dy}{dx}$.Preview
- Q12If $x = a\cos^3 t$, $y = a\sin^3 t$, show that $\dfrac{dy}{dx} = -\left(\dfrac{y}{x}\right)^{1/3}$.Preview
- Q13Examine the continuity of the function: $f(x) = \dfrac{\log 100 + \log(0.01+x)}{3x}$, for $x \neq 0$; $= \dfrac{100}{3}$, for $x = 0$; at $x…Preview
- Q14If $f(x) = \dfrac{x^2-9}{x-3} + \alpha$, for $x > 3$; $= 5$, for $x = 3$; $= 2x^2 + 3x + \beta$, for $x < 3$; is continuous at $x = 3$, find…Preview
- Q15Find $\dfrac{dy}{dx}$ if $y = \tan^{-1}\left(\dfrac{5x+1}{3-x-6x^2}\right)$.Preview
- Q16If $f(x) = (1+2x)^{\frac{1}{x}}$, for $x \neq 0$ is continuous at $x = 0$, then $f(0) =$________. (a) e (b) $e^2$ (c) 0 (d) 2Preview
- Q17If $y = x^x$, find $\dfrac{\mathrm{d}y}{\mathrm{d}x}$.Preview
- Q18Discuss the continuity of the function $f(x) = \dfrac{\log(2+x)\log(2-x)}{\tan x}$, for $x \neq 0$ $= 1$ for $x = 0$ at the point $x = 0$Preview
- Q19If $x = f(t)$ and $y = g(t)$ are differentiable functions of $t$, then prove that $y$ is a differentiable function of $x$ and $\dfrac{\mathr…Preview
- Q20If $f(x) = 1 - x$, for $0 < x \le 1$, $= k$, for $x = 0$, is continuous at $x = 0$, then $k = $ ________. (a) 0 (b) $-1$ (c) 2 (d) 1Preview
- Q21Differentiate $\sin(x^2+x)$ w.r.t. $x$Preview
- Q22Differentiate $\log(\sec x + \tan x)$ w.r.t. $x$.Preview
- Q23If $y = x\log x$, then find $\dfrac{d^2y}{dx^2}$.Preview
- Q24If $e^x + e^y = e^{x+y}$, show that $\dfrac{dy}{dx} = -e^{y-x}$Preview
- Q25Function $f(x)$ is continuous on its domain $[-2, 2]$, where $f(x) = \dfrac{\sin ax}{x}+2$, for $-2 \le x < 0$; $=3x+5$, for $0 \le x \le 1$…Preview
- Q26If $f(x) = x^5 + 2x - 3$, then $(f^{-1})'(-3) = $ ________. (a) 0 (b) $-3$ (c) $-\dfrac{1}{3}$ (d) $\dfrac{1}{2}$Preview
- Q27If $y = e^{m\tan^{-1}x}$, then show that $(1+x^2)\dfrac{d^2y}{dx^2} + (2x-m)\dfrac{dy}{dx} = 0$Preview
- Q28If $x = f(t)$ and $y = g(t)$ are differentiable functions of $t$ so that $y$ is differentiable function of $x$ and $\dfrac{dx}{dt} \ne 0$, t…Preview
- Q29If $y$ is a function of $x$ and $\log(x+y) = 2xy$, then the value of $y'(0) = $ ________. (a) 2 (b) 0 (c) $-1$ (d) 1Preview
- Q30If $y = \sqrt{\tan x + \sqrt{\tan x + \sqrt{\tan x + \ldots + \infty}}}$, then show that $\dfrac{dy}{dx} = \dfrac{\sec^2 x}{2y-1}$. Find $\d…Preview
- Q31If $y = \cos(m\cos^{-1}x)$ then show that $(1-x^2)\dfrac{d^2y}{dx^2} - x\dfrac{dy}{dx} + m^2y = 0$Preview
- Q32The slope of the tangent to the curve $x=\sin\theta$ and $y=\cos 2\theta$ at $\theta = \dfrac{\pi}{6}$ is ____. (a) $-2\sqrt{3}$ (b) $\dfrac…Preview
- Q33Find $\dfrac{dy}{dx}$, if $y=(\log x)^x$.Preview
- Q34If $y=\sin^{-1}x$, then show that: $(1-x^2)\dfrac{d^2y}{dx^2}-x\cdot\dfrac{dy}{dx}=0$.Preview
- Q35If $x=f(t)$ and $y=g(t)$ are differentiable functions of $t$, so that $y$ is function of $x$ and $\dfrac{dx}{dt}\ne 0$ then prove that $\dfr…Preview
- Q36Let $f(1)=3$, $f'(1)=-\dfrac{1}{3}$, $g(1)=-4$ and $g'(1)=-\dfrac{8}{3}$. The derivative of $\sqrt{[f(x)]^2+[g(x)]^2}$ w.r.t. $x$ at $x=1$ i…Preview
- Q37Find the $n^{th}$ order derivative of $\log x$.Preview
- Q38If $x=f(t)$ and $y=g(t)$ are differentiable functions of $t$ so that $y$ is a function of $x$ and if $\dfrac{dx}{dt}\ne 0$ then prove that $…Preview
- Q39If $y=\sec(\tan^{-1}x)$, then $\dfrac{dy}{dx}$ at $x=1$ is ____. (a) $\dfrac12$ (b) 1 (c) $\dfrac{1}{\sqrt2}$ (d) $\sqrt2$Preview
- Q40Find $\dfrac{dy}{dx}$, if $\sqrt x + \sqrt y = \sqrt a$.Preview
- Q41Find $\dfrac{d^2y}{dx^2}$, if $y=x^3+7x^2-2x-9$.Preview
- Q42If $y=f(u)$ is a differentiable function of $u$ and $u=g(x)$ is a differentiable function of $x$ then prove that $y$ is a differentiable fun…Preview
More questions
251 Q+−Show 37 questionsHide questions37 questions
- Q1$(x^3-2x-1)^5$Free
- Q2$\left(2x^{3/2}-3x^{4/3}-5\right)^{5/2}$Free
- Q3$\sqrt{x^2+4x-7}$Free
- Q4$\sqrt{x^2+\sqrt{x^2+1}}$Preview
- Q5$\dfrac{8}{3\sqrt[3]{(2x^2-7x-5)^{11}}}$Preview
- Q6$\left(\sqrt{3x-5}-\dfrac{1}{\sqrt{3x-5}}\right)^5$Preview
- Q7$\cos(x^2+a^2)$Preview
- Q8$\sqrt{e^{(3x+2)}+5}$Preview
- Q9$\log\left[\tan\left(\dfrac{x}{2}\right)\right]$Preview
- Q10$\sqrt{\tan\sqrt{x}}$Preview
- Q11$\cot^3[\log(x^3)]$Preview
- Q12$5^{\sin^3 x + 3}$Preview
- Q13$\text{cosec}(\sqrt{\cos x})$Preview
- Q14$\log[\cos(x^3-5)]$Preview
- Q15$e^{3\sin^2 x - 2\cos^2 x}$Preview
- Q16$\cos^2[\log(x^2+7)]$Preview
- Q17$\tan[\cos(\sin x)]$Preview
- Q18$\sec[\tan(x^4+4)]$Preview
- Q19$e^{\log[(\log x)^2 - \log(x^2)]}$Preview
- Q20$\sin\sqrt{\sin\sqrt{x}}$Preview
- Q21$\log[\sec(e^{x^2})]$Preview
- Q22$\log_{e^2}(\log x)$Preview
- Q23$\{\log[\log(\log x)]\}^2$Preview
- Q24$\sin^2(x^2) - \cos^2(x^2)$Preview
- Q25$(x^2+4x+1)^3 + (x^3-5x-2)^4$Preview
- Q26$(1+4x)^5(3+x-x^2)^8$Preview
- Q27$\dfrac{x}{\sqrt{7-3x}}$Preview
- Q28$\dfrac{(x^3-5)^5}{(x^3+3)^3}$Preview
- Q29$(1+\sin^2 x)^2(1+\cos^2 x)^3$Preview
- Q30$\sqrt{\cos x} + \sqrt{\cos\sqrt{x}}$Preview
- Q31$\log(\sec 3x + \tan 3x)$Preview
- Q32$\log[\tan^3 x \cdot \sin^4 x \cdot (x^2+7)^7]$Preview
- Q33$(25)^{\log_5(\sec x)} - (16)^{\log_4(\tan x)}$Preview
- Q34A table of values of f, g, f' and g' is given: at $x=2$: $f(x)=1$, $g(x)=6$, $f'(x)=-3$, $g'(x)=4$; at $x=4$: $f(x)=3$, $g(x)=4$, $f'(x)=5$,…Preview
- Q35If $f'(3) = -1$, $g'(2) = 5$, $g(2) = 3$ and $y = f[g(x)]$, find $\left(\dfrac{dy}{dx}\right)_{x=2}$.Preview
- Q36Find the x co-ordinates of all the points on the curve $y = \sin 2x - 2\sin x$, $0 \le x < 2\pi$, where $\dfrac{dy}{dx} = 0$.Preview
- Q37Select the appropriate hint from the hint basket and fill in the blank spaces in the following paragraph. [Activity] "Let $f(x) = x^2 + 5$ a…Preview
+−Show 69 questionsHide questions69 questions
- Q38Find the derivative of the function $y=f(x)$ using the derivative of the inverse function $x=f^{-1}(y)$: $y=\sqrt{x}$Free
- Q39Find the derivative of the function $y=f(x)$ using the derivative of the inverse function $x=f^{-1}(y)$: $y=2-\sqrt{x}$Free
- Q40Find the derivative of the function $y=f(x)$ using the derivative of the inverse function $x=f^{-1}(y)$: $y=\sqrt[3]{x-2}$Free
- Q41Find the derivative of the function $y=f(x)$ using the derivative of the inverse function $x=f^{-1}(y)$: $y=\log(2x-1)$Preview
- Q42Find the derivative of the function $y=f(x)$ using the derivative of the inverse function $x=f^{-1}(y)$: $y=2x+3$Preview
- Q43Find the derivative of the function $y=f(x)$ using the derivative of the inverse function $x=f^{-1}(y)$: $y=e^{x-3}$Preview
- Q44Find the derivative of the function $y=f(x)$ using the derivative of the inverse function $x=f^{-1}(y)$: $y=e^{2x-3}$Preview
- Q45Find the derivative of the function $y=f(x)$ using the derivative of the inverse function $x=f^{-1}(y)$: $y=\log_2\left(\dfrac{x}{2} ight)$Preview
- Q46Find the derivative of the inverse function of the following: $y=x^2 e^x$Preview
- Q47Find the derivative of the inverse function of the following: $y=x\cos x$Preview
- Q48Find the derivative of the inverse function of the following: $y=x\cdot 7^x$Preview
- Q49Find the derivative of the inverse function of the following: $y=x^2+\log x$Preview
- Q50Find the derivative of the inverse function of the following: $y=x\log x$Preview
- Q51Find the derivative of the inverse of the following function, and also find its value at the point indicated: $y=x^5+2x^3+3x$, at $x=1$Preview
- Q52Find the derivative of the inverse of the following function, and also find its value at the point indicated: $y=e^x+3x+2$, at $x=0$Preview
- Q53Find the derivative of the inverse of the following function, and also find its value at the point indicated: $y=3x^2+2\log x^3$, at $x=1$Preview
- Q54Find the derivative of the inverse of the following function, and also find its value at the point indicated: $y=\sin(x-2)+x^2$, at $x=2$Preview
- Q55If $f(x)=x^3+x-2$, find $(f^{-1})'(0)$.Preview
- Q56Using derivative, prove: $\tan^{-1}x+\cot^{-1}x=\dfrac{\pi}{2}$Preview
- Q57Using derivative, prove: $\sec^{-1}x+\text{cosec}^{-1}x=\dfrac{\pi}{2}$, for $|x|\ge1$Preview
- Q58Differentiate the following w.r.t. $x$: $\tan^{-1}(\log x)$Preview
- Q59Differentiate the following w.r.t. $x$: $\text{cosec}^{-1}(e^{-x})$Preview
- Q60Differentiate the following w.r.t. $x$: $\cot^{-1}(x^3)$Preview
- Q61Differentiate the following w.r.t. $x$: $\cot^{-1}(4^x)$Preview
- Q62Differentiate the following w.r.t. $x$: $\tan^{-1}(\sqrt{x})$Preview
- Q63Differentiate the following w.r.t. $x$: $\sin^{-1}\left(\dfrac{1+x^2}{2}\right)$Preview
- Q64Differentiate the following w.r.t. $x$: $\cos^{-1}(1-x^2)$Preview
- Q65Differentiate the following w.r.t. $x$: $\sin^{-1}(x^{3/2})$Preview
- Q66Differentiate the following w.r.t. $x$: $\cos^3[\cos^{-1}(x^3)]$Preview
- Q67Differentiate the following w.r.t. $x$: $\sin^4[\sin^{-1}(\sqrt{x})]$Preview
- Q68Differentiate the following w.r.t. $x$: $\cot^{-1}[\cot(e^{x^2})]$Preview
- Q69Differentiate the following w.r.t. $x$: $\text{cosec}^{-1}\left(\dfrac{1}{\cos(5x)}\right)$Preview
- Q70Differentiate the following w.r.t. $x$: $\cos^{-1}\sqrt{\dfrac{1+\cos x}{2}}$Preview
- Q71Differentiate the following w.r.t. $x$: $\cos^{-1}\sqrt{\dfrac{1-\cos(x^2)}{2}}$Preview
- Q72Differentiate the following w.r.t. $x$: $\tan^{-1}\dfrac{1-\tan(x/2)}{1+\tan(x/2)}$Preview
- Q73Differentiate the following w.r.t. $x$: $\text{cosec}^{-1}\left(\dfrac{1}{4\cos^3 2x - 3\cos 2x}\right)$Preview
- Q74Differentiate the following w.r.t. $x$: $\tan^{-1}\dfrac{1+\cos(x/3)}{\sin(x/3)}$Preview
- Q75Differentiate the following w.r.t. $x$: $\cot^{-1}\dfrac{\sin 3x}{1+\cos 3x}$Preview
- Q76Differentiate the following w.r.t. $x$: $\tan^{-1}\dfrac{\cos 7x}{1+\sin 7x}$Preview
- Q77Differentiate the following w.r.t. $x$: $\tan^{-1}\sqrt{\dfrac{1+\cos x}{1-\cos x}}$Preview
- Q78Differentiate the following w.r.t. $x$: $\tan^{-1}(\text{cosec}\ x + \cot x)$Preview
- Q79Differentiate the following w.r.t. $x$: $\cot^{-1}\dfrac{\sqrt{1+\sin(4x/3)}+\sqrt{1-\sin(4x/3)}}{\sqrt{1+\sin(4x/3)}-\sqrt{1-\sin(4x/3)}}$Preview
- Q80Differentiate the following w.r.t. $x$: $\sin^{-1}\dfrac{4\sin x+5\cos x}{\sqrt{41}}$Preview
- Q81Differentiate the following w.r.t. $x$: $\cos^{-1}\dfrac{\sqrt3\cos x-\sin x}{2}$Preview
- Q82Differentiate the following w.r.t. $x$: $\sin^{-1}\dfrac{\cos\sqrt x+\sin\sqrt x}{\sqrt2}$Preview
- Q83Differentiate the following w.r.t. $x$: $\cos^{-1}\dfrac{3\cos 3x-4\sin 3x}{5}$Preview
- Q84Differentiate the following w.r.t. $x$: $\cos^{-1}\dfrac{3\cos(e^x)+2\sin(e^x)}{\sqrt{13}}$Preview
- Q85Differentiate the following w.r.t. $x$: $\text{cosec}^{-1}\dfrac{10}{6\sin(2x)-8\cos(2x)}$Preview
- Q86Differentiate the following w.r.t. $x$: $\cos^{-1}\dfrac{1-x^2}{1+x^2}$Preview
- Q87Differentiate the following w.r.t. $x$: $\tan^{-1}\dfrac{2x}{1-x^2}$Preview
- Q88Differentiate the following w.r.t. $x$: $\sin^{-1}\dfrac{1-x^2}{1+x^2}$Preview
- Q89Differentiate the following w.r.t. $x$: $\sin^{-1}(2x\sqrt{1-x^2})$Preview
- Q90Differentiate the following w.r.t. $x$: $\cos^{-1}(3x-4x^3)$Preview
- Q91Differentiate the following w.r.t. $x$: $\cos^{-1}\dfrac{e^x-e^{-x}}{e^x+e^{-x}}$Preview
- Q92Differentiate the following w.r.t. $x$: $\cos^{-1}\dfrac{1-9^x}{1+9^x}$Preview
- Q93Differentiate the following w.r.t. $x$: $\sin^{-1}\dfrac{4^{x+\frac12}}{1+2^{4x}}$Preview
- Q94Differentiate the following w.r.t. $x$: $\sin^{-1}\dfrac{1-25x^2}{1+25x^2}$Preview
- Q95Differentiate the following w.r.t. $x$: $\sin^{-1}\dfrac{1-x^3}{1+x^3}$Preview
- Q96Differentiate the following w.r.t. $x$: $\tan^{-1}\dfrac{2x^{5/2}}{1-x^5}$Preview
- Q97Differentiate the following w.r.t. $x$: $\cot^{-1}\dfrac{1-\sqrt x}{1+\sqrt x}$Preview
- Q98Differentiate the following w.r.t. $x$: $\tan^{-1}\dfrac{8x}{1-15x^2}$Preview
- Q99Differentiate the following w.r.t. $x$: $\cot^{-1}\dfrac{1+35x^2}{2x}$Preview
- Q100Differentiate the following w.r.t. $x$: $\tan^{-1}\dfrac{2\sqrt x}{1+3x}$Preview
- Q101Differentiate the following w.r.t. $x$: $\tan^{-1}\dfrac{2^{x+1}}{1-3(4^x)}$Preview
- Q102Differentiate the following w.r.t. $x$: $\tan^{-1}\dfrac{2^x}{1+2^{2x+1}}$Preview
- Q103Differentiate the following w.r.t. $x$: $\cot^{-1}\dfrac{a^2-6x^2}{5ax}$Preview
- Q104Differentiate the following w.r.t. $x$: $\tan^{-1}\dfrac{a+b\tan x}{b-a\tan x}$Preview
- Q105Differentiate the following w.r.t. $x$: $\tan^{-1}\dfrac{5-x}{6x^2-5x-3}$Preview
- Q106Differentiate the following w.r.t. $x$: $\cot^{-1}\dfrac{4-x-2x^2}{3x+2}$Preview
+−Show 44 questionsHide questions44 questions
- Q107Differentiate the following w.r.t. $x$: $\dfrac{(x+1)^2}{(x+2)^3(x+3)^4}$Free
- Q108Differentiate the following w.r.t. $x$: $\dfrac{4x-1}{(2x+3)(5-2x)^2}$Free
- Q109Differentiate the following w.r.t. $x$: $(x^2+3)^{3/2}\cdot\sin^3(2x)\cdot 2^{x^2}$Free
- Q110Differentiate the following w.r.t. $x$: $\dfrac{(x^2+2x+2)^{3/2}}{(\sqrt x+3)^3(\cos x)^x}$Preview
- Q111Differentiate the following w.r.t. $x$: $\dfrac{x^5\tan^3 4x}{\sin^2 3x}$Preview
- Q112Differentiate the following w.r.t. $x$: $x^{\tan^{-1}x}$Preview
- Q113Differentiate the following w.r.t. $x$: $(\sin x)^x$Preview
- Q114Differentiate the following w.r.t. $x$: $(\sin x)^{x^3}$Preview
- Q115Differentiate the following w.r.t. $x$: $x^e+x^x+e^x+e^e$Preview
- Q116Differentiate the following w.r.t. $x$: $x^{x^x}+e^{x^x}$Preview
- Q117Differentiate the following w.r.t. $x$: $(\log x)^x-(\cos x)^{\cot x}$Preview
- Q118Differentiate the following w.r.t. $x$: $x^{e^x}+(\log x)^{\sin x}$Preview
- Q119Differentiate the following w.r.t. $x$: $e^{\tan x}+(\log x)^{\tan x}$Preview
- Q120Differentiate the following w.r.t. $x$: $(\sin x)^{\tan x}+(\cos x)^{\cot x}$Preview
- Q121Differentiate the following w.r.t. $x$: $10^{x^x}+x^{x^{10}}+x^{10^x}$Preview
- Q122Differentiate the following w.r.t. $x$: $[(\tan x)^{\tan x}]^{\tan x}$ at $x=\dfrac{\pi}{4}$Preview
- Q123Find $\dfrac{dy}{dx}$ if $\sqrt x+\sqrt y=\sqrt a$Preview
- Q124Find $\dfrac{dy}{dx}$ if $x\sqrt x+y\sqrt y=a\sqrt a$Preview
- Q125Find $\dfrac{dy}{dx}$ if $x+\sqrt{xy}+y=1$Preview
- Q126Find $\dfrac{dy}{dx}$ if $x^3+x^2y+xy^2+y^3=81$Preview
- Q127Find $\dfrac{dy}{dx}$ if $x^2y^2-\tan^{-1}\sqrt{x^2+y^2}=\cot^{-1}\sqrt{x^2+y^2}$Preview
- Q128Find $\dfrac{dy}{dx}$ if $xe^y+ye^x=1$Preview
- Q129Find $\dfrac{dy}{dx}$ if $e^{x+y}=\cos(x-y)$Preview
- Q130Find $\dfrac{dy}{dx}$ if $\cos(xy)=x+y$Preview
- Q131Find $\dfrac{dy}{dx}$ if $e^{e^{x-y}}=\dfrac{x}{y}$Preview
- Q132Find $\dfrac{dy}{dx}$ if $x+\sin(x+y)=y-\cos(x-y)$Preview
- Q133Show that $\dfrac{dy}{dx}=\dfrac{y}{x}$ in the following, where $a$ and $p$ are constants: $x^7y^5=(x+y)^{12}$Preview
- Q134Show that $\dfrac{dy}{dx}=\dfrac{y}{x}$ in the following, where $a$ and $p$ are constants: $x^py^4=(x+y)^{p+4}$, $p\in N$Preview
- Q135Show that $\dfrac{dy}{dx}=\dfrac{y}{x}$ in the following, where $a$ and $p$ are constants: $\sec\dfrac{x^5+y^5}{x^5-y^5}=a^2$Preview
- Q136Show that $\dfrac{dy}{dx}=\dfrac{y}{x}$ in the following, where $a$ and $p$ are constants: $\tan^{-1}\dfrac{3x^2-4y^2}{3x^2+4y^2}=a^2$Preview
- Q137Show that $\dfrac{dy}{dx}=\dfrac{y}{x}$ in the following, where $a$ and $p$ are constants: $\cos^{-1}\dfrac{7x^4+5y^4}{7x^4-5y^4}=\tan^{-1}a…Preview
- Q138Show that $\dfrac{dy}{dx}=\dfrac{y}{x}$ in the following, where $a$ and $p$ are constants: $\log\dfrac{x^{20}-y^{20}}{x^{20}+y^{20}}=20$Preview
- Q139Show that $\dfrac{dy}{dx}=\dfrac{y}{x}$ in the following, where $a$ and $p$ are constants: $e^{\frac{x^7-y^7}{x^7+y^7}}=a$Preview
- Q140Show that $\dfrac{dy}{dx}=\dfrac{y}{x}$ in the following, where $a$ and $p$ are constants: $\sin\dfrac{x^3-y^3}{x^3+y^3}=a^3$Preview
- Q141If $\log(x+y)=\log(xy)+p$ ($p$ constant), prove $\dfrac{dy}{dx}=-\dfrac{y^2}{x^2}$.Preview
- Q142If $\log_{10}\dfrac{x^3-y^3}{x^3+y^3}=2$, show $\dfrac{dy}{dx}=-\dfrac{99x^2}{101y^2}$.Preview
- Q143If $\log_5\dfrac{x^4+y^4}{x^4-y^4}=2$, show $\dfrac{dy}{dx}=-\dfrac{12x^3}{13y^3}$.Preview
- Q144If $e^x+e^y=e^{x+y}$, show $\dfrac{dy}{dx}=-e^{y-x}$.Preview
- Q145If $\sin^{-1}\dfrac{x^5-y^5}{x^5+y^5}=\dfrac{\pi}{6}$, show $\dfrac{dy}{dx}=\dfrac{x^4}{3y^4}$.Preview
- Q146If $x^y=e^{x-y}$, show $\dfrac{dy}{dx}=\dfrac{\log x}{(1+\log x)^2}$.Preview
- Q147If $y=\sqrt{\cos x+\sqrt{\cos x+\sqrt{\cos x+\cdots\infty}}}$, show $\dfrac{dy}{dx}=\dfrac{\sin x}{1-2y}$.Preview
- Q148If $y=\sqrt{\log x+\sqrt{\log x+\sqrt{\log x+\cdots\infty}}}$, show $\dfrac{dy}{dx}=\dfrac{1}{x(2y-1)}$.Preview
- Q149If $y=x^{x^{x^{\cdots\infty}}}$, show $\dfrac{dy}{dx}=\dfrac{y^2}{x(1-\log y)}$.Preview
- Q150If $e^y=y^x$, show $\dfrac{dy}{dx}=\dfrac{(\log y)^2}{\log y-1}$.Preview
+−Show 29 questionsHide questions29 questions
- Q151Find $\dfrac{dy}{dx}$ if $x=at^2$, $y=2at$.Free
- Q152Find $\dfrac{dy}{dx}$ if $x=a\cot\theta$, $y=b\,\text{cosec}\,\theta$.Free
- Q153Find $\dfrac{dy}{dx}$ if $x=\sqrt{a^2+m^2}$, $y=\log(a^2+m^2)$ (parameter $m$).Free
- Q154Find $\dfrac{dy}{dx}$ if $x=\sin\theta$, $y=\tan\theta$.Preview
- Q155Find $\dfrac{dy}{dx}$ if $x=a(1-\cos\theta)$, $y=b(\theta-\sin\theta)$.Preview
- Q156Find $\dfrac{dy}{dx}$ if $x=\left(t+\dfrac1t\right)^a$, $y=at+\dfrac1t$, where $a>0,\ a\ne1,\ t\ne0$.Preview
- Q157Find $\dfrac{dy}{dx}$ if $x=\cos^{-1}\dfrac{2t}{1+t^2}$, $y=\sec^{-1}\left(\sqrt{1+t^2}\right)$.Preview
- Q158Find $\dfrac{dy}{dx}$ if $x=\cos^{-1}(4t^3-3t)$, $y=\tan^{-1}\dfrac{\sqrt{1-t^2}}{t}$.Preview
- Q159Find $\dfrac{dy}{dx}$ if $x=\text{cosec}^2\theta$, $y=\cot^3\theta$, at $\theta=\dfrac{\pi}{6}$.Preview
- Q160Find $\dfrac{dy}{dx}$ if $x=a\cos^3\theta$, $y=a\sin^3\theta$, at $\theta=\dfrac{\pi}{3}$.Preview
- Q161Find $\dfrac{dy}{dx}$ if $x=t^2+t+1$, $y=\sin\dfrac{\pi t}{2}+\cos\dfrac{\pi t}{2}$, at $t=1$.Preview
- Q162Find $\dfrac{dy}{dx}$ if $x=2\cos t+\cos 2t$, $y=2\sin t-\sin 2t$, at $t=\dfrac{\pi}{4}$.Preview
- Q163Find $\dfrac{dy}{dx}$ if $x=t+2\sin(\pi t)$, $y=3t-\cos(\pi t)$, at $t=\dfrac12$.Preview
- Q164If $x=a\sqrt{\sec\theta-\tan\theta}$, $y=a\sqrt{\sec\theta+\tan\theta}$, show that $\dfrac{dy}{dx}=-\dfrac{y}{x}$.Preview
- Q165If $x=e^{\sin3t}$, $y=e^{\cos3t}$, show that $\dfrac{dy}{dx}=-\dfrac{y\log x}{x\log y}$.Preview
- Q166If $x=\dfrac{t+1}{t-1}$, $y=\dfrac{t-1}{t+1}$, show that $y^2+\dfrac{dy}{dx}=0$.Preview
- Q167If $x=a\cos^3t$, $y=a\sin^3t$, show that $\dfrac{dy}{dx}=-\left(\dfrac{y}{x}\right)^{1/3}$.Preview
- Q168If $x=2\cos^4(t+3)$, $y=3\sin^4(t+3)$, show that $\dfrac{dy}{dx}=-\sqrt{\dfrac{3y}{2x}}$.Preview
- Q169If $x=\log(1+t^2)$, $y=t-\tan^{-1}t$, show that $\dfrac{dy}{dx}=\dfrac{\sqrt{e^x-1}}{2}$.Preview
- Q170If $x=\sin^{-1}(e^t)$, $y=\sqrt{1-e^{2t}}$, show that $\sin x+\dfrac{dy}{dx}=0$.Preview
- Q171If $x=\dfrac{2bt}{1+t^2}$, $y=a\dfrac{1-t^2}{1+t^2}$, show that $\dfrac{dx}{dy}=-\dfrac{b^2y}{a^2x}$.Preview
- Q172Differentiate $x\sin x$ w.r.t. $\tan x$.Preview
- Q173Differentiate $\sin^{-1}\dfrac{2x}{1+x^2}$ w.r.t. $\cos^{-1}\dfrac{1-x^2}{1+x^2}$.Preview
- Q174Differentiate $\tan^{-1}\dfrac{x}{\sqrt{1-x^2}}$ w.r.t. $\sec^{-1}\dfrac{1}{2x^2-1}$.Preview
- Q175Differentiate $\cos^{-1}\dfrac{1-x^2}{1+x^2}$ w.r.t. $\tan^{-1}x$.Preview
- Q176Differentiate $3^x$ w.r.t. $\log_x 3$.Preview
- Q177Differentiate $\tan^{-1}\dfrac{\cos x}{1+\sin x}$ w.r.t. $\sec^{-1}x$.Preview
- Q178Differentiate $x^x$ w.r.t. $x^{\sin x}$.Preview
- Q179Differentiate $\tan^{-1}\dfrac{\sqrt{1+x^2}-1}{x}$ w.r.t. $\tan^{-1}\dfrac{2x\sqrt{1-x^2}}{1-2x^2}$.Preview
+−Show 34 questionsHide questions34 questions
- Q180$2x^5-4x^3-\dfrac{2}{x^2}-9$Free
- Q181$e^{2x}\cdot\tan x$Free
- Q182$e^{4x}\cdot\cos 5x$Free
- Q183$x^3\log x$Preview
- Q184$\log(\log x)$Preview
- Q185$x^x$Preview
- Q186$x=a(\theta-\sin\theta)$, $y=a(1-\cos\theta)$Preview
- Q187$x=2at^2$, $y=4at$Preview
- Q188$x=\sin\theta$, $y=\sin^3\theta$, when $\theta=\pi/2$Preview
- Q189$x=a\cos\theta$, $y=b\sin\theta$, at $\theta=\pi/4$Preview
- Q190$x=at^2$, $y=2at$, then show that $xy\,\dfrac{d^2y}{dx^2}+a=0$Preview
- Q191$y=e^{m\tan^{-1}x}$, show that $(1+x^2)\dfrac{d^2y}{dx^2}+(2x-m)\dfrac{dy}{dx}=0$Preview
- Q192$x=\cos t$, $y=e^{mt}$, show that $(1-x^2)\dfrac{d^2y}{dx^2}-x\dfrac{dy}{dx}-m^2y=0$Preview
- Q193$y=x+\tan x$, show that $\cos^2x\cdot\dfrac{d^2y}{dx^2}-2y+2x=0$Preview
- Q194$y=e^{ax}\sin(bx)$, show that $y_2-2ay_1+(a^2+b^2)y=0$ (where $y_1=dy/dx$, $y_2=d^2y/dx^2$)Preview
- Q195$\sec^{-1}\dfrac{7x^3-5y^3}{7x^3+5y^3}=m$, show that $\dfrac{d^2y}{dx^2}=0$Preview
- Q196$2y=\sqrt{x+1}+\sqrt{x-1}$, show that $4(x^2-1)y_2+4xy_1-y=0$Preview
- Q197$y=[\log(x+\sqrt{x^2+a^2})]^m$, show that $(x^2+a^2)\dfrac{d^2y}{dx^2}+x\dfrac{dy}{dx}=0$Preview
- Q198$y=\sin(m\cos^{-1}x)$, show that $(1-x^2)\dfrac{d^2y}{dx^2}-x\dfrac{dy}{dx}+m^2y=0$Preview
- Q199$y=\log(\log 2x)$, show that $xy_2+y_1(1+xy_1)=0$Preview
- Q200$x^2+6xy+y^2=10$, show that $\dfrac{d^2y}{dx^2}=\dfrac{80}{(3x+y)^3}$Preview
- Q201$x=a\sin t-b\cos t$, $y=a\cos t+b\sin t$, show that $\dfrac{d^2y}{dx^2}=-\dfrac{x^2+y^2}{y^3}$Preview
- Q202$(ax+b)^m$Preview
- Q203$\dfrac1x$Preview
- Q204$e^{ax+b}$Preview
- Q205$a^{px+q}$Preview
- Q206$\log(ax+b)$Preview
- Q207$\cos x$Preview
- Q208$\sin(ax+b)$Preview
- Q209$\cos(3-2x)$Preview
- Q210$\log(2x+3)$Preview
- Q211$\dfrac{1}{3x-5}$Preview
- Q212$y=e^{ax}\cos(bx+c)$Preview
- Q213$y=e^{8x}\cos(6x+7)$Preview
+−Show 12 questionsHide questions12 questions
- Q214Let $f(1)=3$, $f'(1)=-\dfrac13$, $g(1)=-4$, $g'(1)=-\dfrac83$. The derivative of $\sqrt{[f(x)]^2+[g(x)]^2}$ w.r.t. x at $x=1$ is: (A) $-\dfr…Free
- Q215If $y=\sec(\tan^{-1}x)$ then $\dfrac{dy}{dx}$ at $x=1$ is equal to: (A) $\dfrac12$ (B) $1$ (C) $\dfrac{1}{\sqrt2}$ (D) $\sqrt2$Free
- Q216If $f(x)=\sin^{-1}\dfrac{4^{x+\frac12}}{1+2^{4x}}$, which of the following is NOT the derivative of $f(x)$? (A) $\dfrac{2\cdot4^x\log4}{1+4^…Free
- Q217If $x^y=y^x$, then $\dfrac{dy}{dx}=$ (A) $\dfrac{x(x\log y-y)}{y(y\log x-x)}$ (B) $\dfrac{y(y\log x-x)}{x(x\log y-y)}$ (C) $\dfrac{y^2(1-\lo…Preview
- Q218If $y=\sin(2\sin^{-1}x)$, then $\dfrac{dy}{dx}=$ (A) $\dfrac{2-4x^2}{\sqrt{1-x^2}}$ (B) $\dfrac{2+4x^2}{\sqrt{1-x^2}}$ (C) $\dfrac{4x^2-1}{\…Preview
- Q219If $y=\tan^{-1}\dfrac{x}{1+\sqrt{1-x^2}}+\sin\!\left(2\tan^{-1}\sqrt{\dfrac{1-x}{1+x}}\right)$, then $\dfrac{dy}{dx}=$ (A) $\dfrac{x}{\sqrt{…Preview
- Q220If y is a function of x and $\log(x+y)=2xy$, then the value of $y'(0)$ = (A) 2 (B) 0 (C) $-1$ (D) 1Preview
- Q221If g is the inverse of a function f and $f'(x)=\dfrac{1}{1+x^7}$, then the value of $g'(x)$ is equal to: (A) $1+x^7$ (B) $\dfrac{1}{1+[g(x)]…Preview
- Q222If $x\sqrt{y+1}+y\sqrt{x+1}=0$ and $x\ne y$ then $\dfrac{dy}{dx}=$ (A) $\dfrac{1}{(1+x)^2}$ (B) $-\dfrac{1}{(1+x)^2}$ (C) $(1+x)^2$ (D) $-\d…Preview
- Q223If $y=\tan^{-1}\sqrt{\dfrac{a-x}{a+x}}$, where $-a<x<a$ then $\dfrac{dy}{dx}=$ (A) $\dfrac{x}{\sqrt{a^2-x^2}}$ (B) $\dfrac{a}{\sqrt{a^2-x^2}…Preview
- Q224If $x=a(\cos\theta+\theta\sin\theta)$, $y=a(\sin\theta-\theta\cos\theta)$ then $\left(\dfrac{d^2y}{dx^2}\right)_{\theta=\pi/4}=$ (A) $\dfrac…Preview
- Q225If $y=a\cos(\log x)$ and $A\dfrac{d^2y}{dx^2}+B\dfrac{dy}{dx}+Cy=0$, then the values of A, B, C are: (A) $x^2,-x,-1$ (B) $x^2,x,1$ (C) $x^2,…Preview
+−Show 26 questionsHide questions26 questions
- Q226Let $f(x) = -x$ for $-2\le x<0$; $f(x)=2x$ for $0\le x\le2$; $f(x)=\dfrac{2x-4}{3}$ for $2<x\le7$. And $g(x)=6-3x$ for $0\le x\le2$; $g(x)=\…Free
- Q227The values of $f(x)$, $g(x)$, $f'(x)$ and $g'(x)$ are given in the following table: at $x=-1$: $f=3,g=2,f'=-3,g'=4$; at $x=2$: $f=2,g=-1,f'=…Free
- Q228Suppose that the functions f and g and their derivatives with respect to x have the following values at $x=0$ and $x=1$: at $x=0$: $f=1,g=1,…Free
- Q229Suppose that the functions f and g and their derivatives with respect to x have the following values at $x=0$ and $x=1$: at $x=0$: $f=1,g=1,…Preview
- Q230Suppose that the functions f and g and their derivatives with respect to x have the following values at $x=0$ and $x=1$: at $x=0$: $f=1,g=1,…Preview
- Q231Suppose that the functions f and g and their derivatives with respect to x have the following values at $x=0$ and $x=1$: at $x=0$: $f=1,g=1,…Preview
- Q232Differentiate $\sin\!\left[2\tan^{-1}\dfrac{1-x}{1+x}\right]$ w.r.t. xPreview
- Q233Differentiate $\sin^2\!\left[\cot^{-1}\dfrac{1+x}{1-x}\right]$ w.r.t. xPreview
- Q234Differentiate $\tan^{-1}\dfrac{\sqrt{x(3-x)}}{1-3x}$ w.r.t. xPreview
- Q235Differentiate $\cos^{-1}\dfrac{\sqrt{1+x}-\sqrt{1-x}}{2}$ w.r.t. xPreview
- Q236Differentiate $\tan^{-1}\dfrac{x}{1+6x^2}+\cot^{-1}\dfrac{1-10x^2}{7x}$ w.r.t. xPreview
- Q237Differentiate $\tan^{-1}\dfrac{\sqrt{1+x^2}+x}{\sqrt{1+x^2}-x}$ w.r.t. xPreview
- Q238If $\sqrt{y+x}+\sqrt{y-x}=c$, then show that $\dfrac{dy}{dx}=\dfrac{y}{x}-\sqrt{\dfrac{y^2}{x^2}-1}$Preview
- Q239If $x\sqrt{1-y^2}+y\sqrt{1-x^2}=1$, then show that $\dfrac{dy}{dx}=-\sqrt{\dfrac{1-y^2}{1-x^2}}$Preview
- Q240If $x\sin(a+y)+\sin a\cos(a+y)=0$, then show that $\dfrac{dy}{dx}=\dfrac{\sin^2(a+y)}{\sin a}$Preview
- Q241If $\sin y=x\sin(a+y)$, then show that $\dfrac{dy}{dx}=\dfrac{\sin^2(a+y)}{\sin a}$Preview
- Q242If $x=e^{x/y}$, then show that $\dfrac{dy}{dx}=\dfrac{x-y}{x\log x}$Preview
- Q243If $y=f(x)$ is a differentiable function then show that $\dfrac{d^2x}{dy^2}=-\left(\dfrac{dy}{dx}\right)^{-3}\cdot\dfrac{d^2y}{dx^2}$Preview
- Q244Differentiate $\tan^{-1}\dfrac{\sqrt{1+x^2}-1}{x}$ w.r.t. $\tan^{-1}\dfrac{2x\sqrt{1-x^2}}{1-2x^2}$Preview
- Q245Differentiate $\log\dfrac{\sqrt{1+x^2}+x}{\sqrt{1+x^2}-x}$ w.r.t. $\cos(\log x)$Preview
- Q246Differentiate $\tan^{-1}\dfrac{\sqrt{1+x^2}-1}{x}$ w.r.t. $\cos^{-1}\dfrac{1+\sqrt{1+x^2}}{2\sqrt{1+x^2}}$Preview
- Q247If $y^2=a^2\cos^2x+b^2\sin^2x$, show that $y+\dfrac{d^2y}{dx^2}=\dfrac{a^2b^2}{y^3}$Preview
- Q248If $\log y=\log(\sin x)-x^2$, show that $\dfrac{d^2y}{dx^2}+4x\dfrac{dy}{dx}+(4x^2+3)y=0$Preview
- Q249If $x=a\cos\theta$, $y=b\sin\theta$, show that $a^2y\dfrac{d^2y}{dx^2}+\left(\dfrac{dy}{dx}\right)^2+b^2=0$Preview
- Q250If $y=A\cos(\log x)+B\sin(\log x)$, show that $x^2\dfrac{d^2y}{dx^2}+x\dfrac{dy}{dx}+y=0$Preview
- Q251If $y=Ae^{mx}+Be^{nx}$, show that $\dfrac{d^2y}{dx^2}-(m+n)\dfrac{dy}{dx}+mn\,y=0$Preview