Question #N1016
The function $f(x) = \frac{x^2 + 1}{x - 2}$ is undefined for which value of $x$?
A. -2
B. 0
C. 1
D. 2
Correct Answer is: D
A function is undefined when the denominator of a fraction is zero. The denominator of $f(x)$ is $x - 2$, and this is equal to zero when $x = 2$. Therefore, $f(x)$ is undefined when $x = 2$.