Question

Y = f(x) = 4^x Find f(x) when x = 1/2 Enter the correct answer.

Answer 1

We have

$f(x)=4^x$

We want to know what is the value of y when x is 1/2

$f(\frac{1}{2})=4^{\frac{1}{2}}$

Note that $a^{\frac{b}{c}}=\sqrt[c]{a^b}$ hence

$f(\frac{1}{2})=4^{\frac{1}{2}}=\sqrt[2]{4^1}=\boxed{2}$

Hope this helps.

Answer 2

I believe the answer is 2