Question

Find f(3) if

f(x)=√x + 1.

Answer 1

Depending on what the problem really is,

f(3) = √3 + 1

or

f(3) = 2

See explanation below.

Explanation:

The way the problem is written here, this is the answer:

f(x)=√x + 1

f(3) = √3 + 1

If you meant that the entire expression x + 1 is inside the root, then you have this: f(x) = √(x + 1), then you get this:

f(3) = √(3 + 1) = √4 = 2