Evaluate f(-1)=3^-1

$f (- 1) = 3^{- 1}$

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

$- 1 f = 3^{- 1}$

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

$- f = 3^{- 1}$

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

$- f = \frac{1}{3}$

The result can be shown in multiple forms.

Exact Form:

$- f = \frac{1}{3}$

Decimal Form:

$- f = 0.\overline{3}$