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Exercises · Q6

Q.Comment on the shape of the MR curve in case the TR curve is a

(i) positively sloped straight line,
(ii) horizontal straight line.
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(i) A positively sloped straight-line TRTR has constant slope, so MRMR is a horizontal line at a positive height. (ii) A horizontal TRTR has zero slope, so MR=0MR = 0 (the MRMR curve lies on the output axis).

Marginal revenue equals the slope of the total revenue curve, MR=ΔTRΔqMR = \dfrac{\Delta TR}{\Delta q}, so the shape of the TRTR curve tells us the shape of the MRMR curve. …

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