Hi.

I would appreciate some help with a couple of calculus questions I'm battling with. For the first one:

Why is that a positive value at a turning point indicates a minimum for thr second derivative test? An example would be most helpful, as I don't seem to have much information on this.

Also ( and this is a biggie), how would I go about finding any asymptotes, intercepts or anything of interest in this graph

x^3/(x^2-2)

I've sketched the graph, and this confused me even more. Are there 2 vertical asymptotes?

Thanks in advance