Question

Why is x^-3 not a Exponential Function?

Answer 1

The definitions are distinctly clear. `a^x` is an exponential function and `x^a` is a power function.

Explanation:

`a^x` is defined as an exponential function. Examples are `10`x, 2^x and e^x#

`x^a` is defined as a power function. Examples are `x^2, x^(1/2) and x^(-3)`.