Precalculus Examples

$f (x) = 2 x - 3$ , $g (x) = x + 1$

Step 1

Set up the composite result function.

$g (f (x))$

Step 2

Evaluate $g (2 x - 3)$ by substituting in the value of $f$ into $g$ .

$g (2 x - 3) = (2 x - 3) + 1$

Step 3

Add $- 3$ and $1$ .

$g (2 x - 3) = 2 x - 2$