Question

What is the value of f(x)=2•2^x for f(-2)

Answer 1

The value of f(-2) is 1/2 or it can be written as 0.5.

Explanation:

The given function is

`f(x)=2\cdot 2^x`

We have to find the value of f(-2).

Substitute x=-2 in the given function to find the value of f(-2).

`f(-2)=2\cdot 2^(-2)`

`f(-2)=2\cdot (1)/(2^(2))`

`f(-2)=(1)/(2)`

`f(-2)=0.5`

Therefore the value of f(-2) is 1/2 or it can be written as 0.5.