Volumes of Revolution Cross Sections

314159265
Sat, 01 May 2010 19:00:24 +0000

For the critical points question, just take the derivative and graph it in your calculator. Whenever the graph of f’ crosses the x-axis, that’s a critical point (rather, the x-value). It’s a pretty simple derivative. If the derivative never crosses the x-axis, there are no critical points.

I’m not sure what you mean by a “blank list” when you look for the critical points.