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Topic: Ellipse circumference in workable closed form
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Posts: 37
Registered: 12/23/11
Ellipse circumference in workable closed form
Posted: Dec 16, 2012 1:17 AM
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The derivative of K is estimated with a small delta applied to the form involving the AGM:


At least 14 digits accuracy for all eccentricities from zero up to the point of where the aspect ratio is 1 million to 1.

Thomas Blankenhorn

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