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Topic: simple(?) simplification problem
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hf32

Posts: 1
From: Norway
Registered: 8/3/07
simple(?) simplification problem
Posted: Aug 3, 2007 12:46 AM
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So I am calculating the gaussian curvature of an ellipsoidal surface,
parametrized
r(u,v) = a cos(v)cos(u), b cos(u)sin(u), c sin(v)

finding the first fundamental form yields for E

Ru = -a cos(v)sin(u, b cos(v)cos(u), 0
So in the next step: |Ru|^2 I get
(a* sin(v))^2*cos^2( u) + (b* sin(v))^2*sin^2( u) + (c^2 * (sin(v)^2)) ( http://img179.imageshack.us/img179/3680/possibletv4.png )

just wonder any way to simplify this?
not keen on doing anything further with that one ;D nb, i suck at this



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