The curvature of a plane parametric curve x f t y g t is given by xy yx x y 2 K where dots indicate derivatives with respect to

Question

The curvature of a plane parametric curve x f t y g t is given by xy yx x y 2 K where dots indicate derivatives with respect to t Find the curvature of the following curve x 3et cos t y 3et sin t k t

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