Question

second derivative of x sin 2x​

Answer 1

d/dx(xsin2x)=x(d/dxsin2x)+sin2x(d/dx(x))=xcos2x(2)+sin2x×1

2xcos2x+sin2x

second derivative

2x(-sin2x(2))+cos2x(2)+cos2x(2)

-4xsin2 +4cos2x

4(cos2x-sin2x)

Answer 2

here is your ans...

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