Friday, 10 November 2017

integration - Area for an ellipsoid

"Calculate the area for the rotation ellipsoid you get by rotating the ellipsoid $\frac{x^2}{2}+y^2 = 1$ around the x-axis."



I solved for x:



$$ y = \pm \sqrt{1-\frac{x^2}{2}} $$



Then did $ y = 0$ to get the integration limits, $\pm \sqrt(2)$.




So I've ended up with an integral I don't know if it's correct, and even if it is, I can't solve it.



$$ 4\pi \int_{\sqrt{2}}^{\sqrt{2}} \sqrt{1-\frac{x^2}{2}} \sqrt{1-\frac{x}{2\sqrt{1-\frac{x^2}{2}}}}dx$$

No comments:

Post a Comment

real analysis - How to find $lim_{hrightarrow 0}frac{sin(ha)}{h}$

How to find $\lim_{h\rightarrow 0}\frac{\sin(ha)}{h}$ without lhopital rule? I know when I use lhopital I easy get $$ \lim_{h\rightarrow 0}...