# Math Help - limits

1. ## limits

how do you show that the limit of a sequence exists? I forget.

for example limx $_{x}$ $\rightarrow$-1 $x^{3}$-3x. im having a brain fart please refresh my memory.

2. That's not really a sequence. I'm going to guess that you're supposed to give an epsilon-delta proof of the continuity of $f(x)=x^3-3x$ at $x=-1$.