### Home > APCALC > Chapter 1 > Lesson 1.3.1 > Problem1-102

1-102.

State the domain of each of the following functions. Homework Help ✎

1. f(x) = $\large\frac { x - 2 } { x ^ { 2 } + 4 }$

What values of x would make f(x) undefined or imaginary?

When x² + 4 = 0.

D = (−∞, ∞)

2. g(x) = $\large\frac { \sqrt { x + 2 } } { x ^ { 2 } + x }$

What values of x would make f(x) undefined or imaginary?

When x² + x = 0 and when x + 2 < 0.