Elipse [0,2pi](adsbygoogle = window.adsbygoogle || []).push({});

x=acosT

y=bsinT\

by symmetry

4I(y,x)

chossing the limits of integration my text is showing

4I(y,x,0,a)

T=0=>x=a

T=pi/2=>x=0

so wouldnt this be 4I(y,x,a,0)

proceeding inthe books case gives pi(ab) while in the later case gives -pi(ab)

Also

x= (t-1)/t y=(t+1)/t bounded by y=5/2

5/2=(t+1)/t => t=2/3

my text is showing t=1/2 or 2

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# Homework Help: Caclulus with parametric curves

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