Homework Statement
Find the irc at X=2
F(x) = \frac{4}{x-1}
Homework Equations
\stackrel{lim}{h\rightarrow0}\frac{F(a+h)-F(a)}{h}
The Attempt at a Solution
I end up with \frac{4}{h+h^{2}} or some other form of an h on the bottom. Is there something else i can do to it??