Here's the question you clicked on:
ns36
What's the integral of x((sin(x))^3)?
http://www.wolframalpha.com/input/?i=integrate+x%28%28sin%28x%29%29^3%29
sin^3 +x : 3sin^2 cos -1 : 6sin cos^2 -3sin^3 +0 3x sin^2 cos -6sin cos^2 + 3sin^3 +C
ugh; i derived instead of integrated ..... oh well
id go with wolfram too :)