Suppose $b$ is a constant and that $f(x)$ is a function defined when $x = b$. Complete the following sentences.

1. If $f(b)$ is large, then $\displaystyle \frac{1}{f(b)}$ is Choose large small zero infinity -infinity undefined
   
   
2. If $f(b)$ is small, then $\displaystyle \frac{1}{f(b)}$ is Choose large small zero infinity -infinity undefined
   
   
3. If $f(b) = 0$, then $\displaystyle \frac{1}{f(b)}$ is Choose large small zero infinity -infinity undefined
   
   
4. If $f(b)$ is positive, then $\displaystyle \frac{1}{f(b)}$ is Choose positive negative cannot be determined
   
   
5. If $f(b)$ is negative, then $\displaystyle \frac{1}{f(b)}$ is Choose positive negative cannot be determined