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[" (ii) "x=2cos theta-cos2 theta,y=2sin ...

[" (ii) "x=2cos theta-cos2 theta,y=2sin theta-sin2 theta],[[" 8.(i) "," If "x=3sin t-sin3t,y=3cos t-cos3t," find "(d^(2)y)/(dx^(2))" at "t=(pi)/(3)]]

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