Greeting everyone I am trying in integrate this function, to obtain the surface of revolution of a function.(adsbygoogle = window.adsbygoogle || []).push({});

1. Relevant equations

[itex]\int_{-1}^{1} 2\pi\sqrt\frac{x^2 (1 - x^2)}{8}\sqrt{1+(\left| x\right | \frac{-2x^2+1}{2(-x^2+1)^{1/2}*2^{1/2}x}})^2[/itex]

2. The attempt at a solution

I tried to calculate the limit when x = 1 but I can't seems to get the result

If someone would just have a hint on how to calculate the limit of this integral I would appreciate.

Thank you

Jonathan

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# Homework Help: Surface of revolution

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