Question

Determine the domain for f(x) given,
f(x) = √x+1

Answer 1

is the equation

\[\large f(x) = \sqrt{x} + 1\]

or is it

\[\large f(x) = \sqrt{x + 1}\]

Answer 2

the second one

Answer 3

A square root must always have a positive value beneath it, otherwise your answer will contain an imaginary number. So,
\[x+1 \ge 0 \] By subtracting the 1 from both sides, we find our domain,
\[x \ge -1\]

Answer 4

alright, thanks so much!!

Answer 5

No problem, glad to help.