Math, asked by deepanaalluri0926, 1 year ago

differentiation of cos2x-2xsin2x​

Answers

Answered by Anonymous
4

Answer:

f(x) = cos2x - 2xsin2x \\  \\ f'(x) =  - sin2x \frac{d}{dx} (2x) - 2x \frac{d}{dx} (sin2x) + sin2x \frac{d}{dx} (2x) \\  \\   \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: =  -s in2x(2) - 2x(cos2x) \frac{d}{dx} (2x) + sin2x(2) \\  \\  \:  \:  \:  \:  \:  \:  \:  =  - 2sin2x - 4x \: cos2x + 2sin2x \\  \\  \:  \:  \:  \:  \:  \:  \:  \:    =  - 4cos2x

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