Precalculus Examples

$f (x) = \sqrt{2 x}$ , $g (x) = 7 x - 2$

Step 1

Set up the composite result function.

$g (f (x))$

Step 2

Evaluate $g (\sqrt{2 x})$ by substituting in the value of $f$ into $g$ .

$g (\sqrt{2 x}) = 7 (\sqrt{2 x}) - 2$

Step 3

Multiply $7$ by $\sqrt{2 x}$ .

$g (\sqrt{2 x}) = 7 \sqrt{2 x} - 2$