The elasticity of a function f: is defined to be In general, the elasticity varies with x.

The elasticity of a function f: „œ †’ „œ is defined to be

In general, the elasticity varies with x. Show that the elasticity of a function is constant if and only if it is a power function, that is,
f (x) = Axa

Transcribed Image Text:

E(x) f(x)