Which of the following is an exponential function (y = 2x^2) (y =2x^x) (y= x^-2) (y= 1/2x)

Answer 1

Hi! The way these are written, none of them are exponential functions. Could something be missing from the formatting of any of them? Parentheses or a ^ maybe?

An exponential function should have a number as its base and a variable as its exponent, like y = 2^x (also written as y = 2^x).

Answer 2

Read as y =2x² , y = x^x , y = x^-2 , y = 1/2x.

The exponential function has the variable in the exponent.