y'=3(sin^2)^2 * cosx^2 * 2x
=6xcosx^2(sin^2)^2
y'=3(sinx^2)^2*(cosx^2)*2x
=6x*(sinx^2)^2*(cosx^2)
y'=3(sinx^2)^2*(cosx^2)*2x=6x*(sinx^2)^2*(cosx^2)
=3 sin(x^2)^2 * cos (x^2) *2x=6x *sin(x^2)^2 * cos (x^2)
3*2x(sinx^2)^2 cosx^2
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