Question

Find f(-1) and f(2) for the following function.
f(x)= 3/x^2-4

Answer 1

\[f(\clubsuit)=\frac{3}{\clubsuit^2-4}\]
\[f(-1)=\frac{3}{(-1)^2-4}\]
\[f(2)=\frac{3}{2^2-4}\]

Answer 2

second one is undefined since you cannot divide by zero

Answer 3

so is that the infinity symbol?