Question

Find f(z) …………………the function is defined by f (x) = 2x powered to 2nd -1

Answer 1

To find f(2) we will evaluate the given function at x=2.

Recall that to evaluate a function at a given value, we substitute the variable by the given value, in the case we substitute x by 2:

`f(2)=2(2)^2-1.`

Simplifying the above result we get:

`f(2)=2(4)-1=8-1=7.`

Answer:

`f(2)=7.`