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If y= cos (sin X). d²y/dx²+Tanx.dy/dx+ycos²x=? - Socratic
Mar 30, 2018 · Explanation: As #y=cos (sinx)# # (dy)/ (dx)=-sin (sinx)*cosx# i.e. #sin (sinx)=-1/cosx (dy)/ (dx)# and using product formula # (d^2y)/ (dx^2)=-cosxcos (sinx)cosx+sin ...