Question

Find f(-2).....................................

Answer 1

`(1)/(25)`

Explanation:

`f(x) = {5}^(x) \\ f( - 2) \\ f( - 2) = {5}^( - 2) \\ = \frac{1}{ {5}^(2) } \\ = (1)/(25)`

Answer 2

1/25

Explanation:

f(x) = 5^x

Let x = -2

f(-2) = 5^-2

We know a^-b = 1/a^b

f(-2) = 1/5^2

= 1/25