Q.The inventor of input-output analysis is :

Input-output analysis, a matrix-based technique for modelling the interdependence of industries in an economy, was invented by Prof. Wassily W. Leontief. In the Tamil Nadu HSC Class-11 Business Mathematics syllabus, the Matrices and Determinants chapter introduces input-output analysis as an application of matrices. In this model the inter-industry demand of an economy is written as a matrix equation $X = AX + D$, whose solution $X = (I - A)^{-1}D$ needs the matrix inverse. This technique was created by the economist Wassily W. Leontief (Nobel laureate, 1973). The other names do not belong to input-output analysis: Sir Francis Galton is associated with correlation/regress …