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Xeen · Answer 1 · 2021-09-30T09:01:10+0000

2(cos2x - sin2x)

Step-by-step Step-by-step explanation:

Y = sin2x + cos2x

Differentiate wrt x

dy/dx = cos2x . 2 - sin2x . 2

= 2(cos2x - sin2x)