I have to find the curvature of the curve with the equation (4sint)i+(4sint)j+(4cost)k. I use the magnitude of r'xr'' over the magnitude of r'^3. Nothing cancels out for me. Can anybody help??

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- March 23rd 2011, 12:37 PMMathwizzCurvature
I have to find the curvature of the curve with the equation (4sint)i+(4sint)j+(4cost)k. I use the magnitude of r'xr'' over the magnitude of r'^3. Nothing cancels out for me. Can anybody help??

- March 23rd 2011, 01:00 PMPlato