Homework Statement
Find a value for the constant k that will make the function below continuous:
f(x)=\frac{x-1}{x^2-1}\ \text{if}\ x<=0
f(x)=\frac{tankx}{2x}~\text{if}~x>0
Homework Equations
The Attempt at a Solution
I've tried the only solution I can think of, which is to...