Chapter 5, Problem 14P

Plot the function $f(x)=x+\frac{1}{x^2-1}$ for $-4\le x\le 4$ . Notice that the function has two vertical asymptotes. Plot the function by dividing the domain of x into three parts: one from -4 to near the left asymptote, one between the two asymptotes, and one from near the right asymptote to 4. Set the range of the y axis from -15 to 15.