Question

The function f(x) = 3x^2 + 1 has an inverse function only when its domain is
A)x ≤ 0.
B)x ≤ 1.
C)x ≤ 1/3
D)x ≤ 2.

Answer 1

I'm pretty sure the domain should be when x is greater than of equal to zero. Because the x is never a denominator, however it is under a radical, so you can't have it be negative. However, that's not one of your answer choices. Did you enter them in correctly? I'm not quite sure.