Hey all,

I been playing around with limits, when i solve for the following function:

$\displaystyle \lim_{x\rightarrow\infty }\frac{e^{x}-1}{e^{x}+1}=1$

But when i graph it, i can see that -1 is also a limit. Am i doing something wrong in my calculations? also how does $\displaystyle \{e^{x}-1}=1+e^{x}$ ?. Thanks