A nice, convenient way to get the graph. For the integral: http://www.wolframalpha.com/input/?i=2+integrate%28sqrt%281-x%5E2%29%2Cx%2C-1%2C1%29 http://www.wolf

A nice, convenient way to get the graph. For the integral: http://www.wolframalpha.com/input/?i=2+integrate%28sqrt%281-x%5E2%29%2Cx%2C-1%2C1%29 http://www.wolframalpha.com/input/?i=2+integrate%28sqrt%281-...