find the curvature K of the curve.... r(t) = 4t i + 3 cos t j + 3 sin t k i am confused after i find r'(t)...
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Originally Posted by chris25 find the curvature K of the curve.... r(t) = 4t i + 3 cos t j + 3 sin t k i am confused after i find r'(t)... Here is the formula I have to go to work. I will finish later if no one else has. Good luck.
Originally Posted by TheEmptySet Here is the formula I have to go to work. I will finish later if no one else has. Good luck. As far as I know, it's See here if you wonder how to get the formula: Curvature -- from Wolfram MathWorld
Last edited by wingless; Jun 10th 2008 at 01:37 PM.
Originally Posted by wingless As far as I know, it's See here if you wonder how to get the formula: Curvature -- from Wolfram MathWorld @ wingless You are correct Thanks that is what I get for trying to do it in a hurry. Now we take the cross product to get Simplifying and taking the magnitude we get Now we need the magnitude of Finally we get Yeah. Sorry about the typo before.
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