Question

What is the value of f (x)=16^x when x=1/2 ? A. 2 B. 4 C. 8 D. 32

Answer 1

B

Explanation:

Using the rule of exponents

`a^{(m)/(n) }` ⇔
`\sqrt[n]{a^(m) }`

Given

f(x) =
`16^(x)`, then when x =
`(1)/(2)`

f(
`(1)/(2)` ) =
`16^{(1)/(2) }` =
`\sqrt[2]{16}` = 4