Precalculus Examples

$f (x) = 2 x$ , $F (x) = a x^{2}$

Step 1

Set up the composite result function.

$f (F (x))$

Step 2

Evaluate $f (a x^{2})$ by substituting in the value of $F$ into $f$ .

$f (a x^{2}) = 2 (a x^{2})$

Step 3

Remove parentheses.

$f (a x^{2}) = 2 a x^{2}$