Chapter 4.2, Problem 23PE

(a)

To determine

To calculate:

Whether the function $f(x)={4.2}^x$ is an exponential function or not.

(b)

To determine

To calculate:

Whether the function $g(x)=x^{4.2}$ is an exponential function or not.

(c)

To determine

To calculate:

Whether the function $h(x)=4.2x$ is an exponential function or not.

(d)

To determine

To calculate:

Whether the function $k(x)={\left(\sqrt{4.2}\right)}^x$ is an exponential function or not.

(e)

To determine

To calculate:

Whether the function $m(x)={(-4.2)}^x$ is an exponential function or not.