[" Example "6.1fx=a sin2t(1+cos2 theta)"...

[" Example "6.1fx=a sin2t(1+cos2 theta)" and "y=b cos2t(1-cos2t)*" then find "(dy)/(dx)" at "t=(pi)/(4)],[" Solution Guen "x=a sin2t(9+cos2t)]

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