Question

Given `x^5` if `x<0 and 2x + 1" if "x >= 0`, how do you find `f(-1)`?

Answer 1

See a solution process below:

Explanation:

For `f(-1)`, `x < 1`, therefore we use the formula:

`f(color(red)(x)) = color(red)(x)^5`

Substituting `color(red)(-1)` for `color(red)(x)` gives:

`f(color(red)(-1)) = color(red)(-1)^5`

`f(color(red)(-1)) = color(red)(-1)`