Definition: A function of the form
\[
y(x)=x^k,
\]
with $k$ a non-negative integer is called a positive integer power function.
Remark: $k$ is called the degree of the function.
Example: $f(x)=x^4$ is an example of a positive integer power function.
\[
y(x)=x^k,
\]
with $k$ a non-negative integer is called a positive integer power function.
Remark: $k$ is called the degree of the function.
Example: $f(x)=x^4$ is an example of a positive integer power function.