Elliptic integrals The length of the ellipsex=acost,y=bsint,0≤t≤2π

Answered question

2022-05-17

Elliptic integrals The length of the ellipse

x=acost,y=bsint,0≤t≤2πx=acost, y=bsint, 0t2π

turns out to be

=4a∫π/201−e2cos2t√dt=4a0π/21e2cos2tdt

where ee is the ellipse's eccentricity. The integral in this formula, called an elliptic integral, is non elementary except when e=0e=0 or 1 a. Use the Trapezoidal Rule with n=10n=10 to estimate the length of the ellipse when a=1a=1 and e=1/2e=1/2 . b. Use the fact that the absolute value of the second derivative of f(t)=1−e2cos2t√f(t)=1e2cos2t is less than 1 to find an upper bound for the error in the estimate you obtained in part (a).

Answer & Explanation

nick1337

nick1337

Expert2022-07-03Added 777 answers

Hope it will help you

 

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