Find the derivative w.r.t x

Dear Student,

put x2=cos 2θ=cos-11-cos 2θ2=cos-12sin2θ2=cos-1(cos (π2-θ))=π2-θy=π2-12cos-1x2dydx=-12×-11-x4×2xdydx=x1-x4

Regards!

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