Evaluate f(-1)=4^-1

$f (- 1) = 4^{- 1}$

Step 1

Move $- 1$ to the left of $f$ .

$- 1 f = 4^{- 1}$

Step 2

Rewrite $- 1 f$ as $- f$ .

$- f = 4^{- 1}$

Step 3

Rewrite the expression using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$- f = \frac{1}{4}$

Step 4

The result can be shown in multiple forms.

Exact Form:

$- f = \frac{1}{4}$

Decimal Form:

$- f = 0.25$