The Math Forum

Search All of the Math Forum:

Views expressed in these public forums are not endorsed by NCTM or The Math Forum.

Math Forum » Discussions » Math Topics »

Notice: We are no longer accepting new posts, but the forums will continue to be readable.

Topic: simple(?) simplification problem
Replies: 0  

Advanced Search

Back to Topic List Back to Topic List  

Posts: 1
From: Norway
Registered: 8/3/07
simple(?) simplification problem
Posted: Aug 3, 2007 12:46 AM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

So I am calculating the gaussian curvature of an ellipsoidal surface,
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)) ( )

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

Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© The Math Forum at NCTM 1994-2018. All Rights Reserved.