Question

Find f(- 2) for $f(x) = 5 \times {3}^{x}$

Answer 1

Given:

$f(x)=5\times3^x$

Find: f(-2)

Explanation:

put x=-2 in the given equation.

$\begin{gathered} f(x)=5\times3^x \\ x=-2 \\ f(-2)=5\times3^{-2} \\ f(-2)=\frac{5}{3^2} \\ f(-2)=\frac{5}{9} \end{gathered}$

Final answer: the required answer is

$\frac{5}{9}$