Finite Math Examples

$f (x) = - 2 x$ , $g (x) = 5 x - 2 x$ , $(f \circ g)$

Step 1

Set up the composite result function.

$f (g (x))$

Step 2

Evaluate $f (5 x - 2 x)$ by substituting in the value of $g$ into $f$ .

$f (5 x - 2 x) = - 2 (5 x - 2 x)$

Step 3

Subtract $2 x$ from $5 x$ .

$f (5 x - 2 x) = - 2 (3 x)$

Step 4

Multiply $3$ by $- 2$ .

$f (5 x - 2 x) = - 6 x$