Question #N5
The function $f(x)$ is defined by $f(x) = \frac{1}{x^2 + 1}$. What is the value of $f(\sqrt{3})$?
A. $\frac{1}{4}$
B. $\frac{1}{2}$
C. 1
D. 4
Correct Answer is: A
Substituting $\sqrt{3}$ for x in the given function, we get $f(\sqrt{3}) = \frac{1}{(\sqrt{3})^2 + 1}$. Simplifying, we get $f(\sqrt{3}) = \frac{1}{3 + 1} = \frac{1}{4}$.