Precalculus Examples

$f (x) = 4^{x}$ , $g (x) = 4^{- x}$

Step 1

Set up the composite result function.

$f (g (x))$

Step 2

Evaluate $f (4^{- x})$ by substituting in the value of $g$ into $f$ .

$f (4^{- x}) = 4^{4^{- x}}$