Introduction: In this section we consider the elasticity of a function and the elasticity of its inverse.
Theorem: Consider the function y(x) and its inverse function x(y). Let ϵy denote the elasticity of the function y(x) and ϵx denote the elasticity of the inverse function x(y). Then ϵx=1ϵy.
Theorem: Consider the function y(x) and its inverse function x(y). Let ϵy denote the elasticity of the function y(x) and ϵx denote the elasticity of the inverse function x(y). Then ϵx=1ϵy.