Q. Find the differentiation 
1 .   y   = sin 2 x - cos 2 x 2 .     y   =   cos 2 x + 1 3 3 .       y   = cos   x 3 + sin 2 x 4 .         y   =   3 x 2 - 9 2 sin   x

 

Deat Student


Giveny=sin2x-cos2xdydx=ddxsin2x-ddxcos2x      =2sinxddxsinx-2cosxddxcosx      =2sinx(cosx)-2cosx(-sinx)      =2sinxcosx+2sinxcosx      =4sinxcosx      =2sin2x                     sin2x=2sinxcosx

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