Question

Can u do 25 and how to do it

Answer 1

f(- 1) = 10

Explanation:

using the rule of exponents

`((a)/(b)) ^(-1)` =
`((b)/(a)) ^(1)` =
`(b)/(a)`

to find f(- 1) substitute x = - 1 into f(x)

f(- 1) = 5
`((1)/(2)) ^(-1)` = 5 ×
`(2)/(1)` = 5 × 2 = 10