find derivative of x^2sin(1/x) using limit law
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y=x^2sin(1/x)
dy/dx=x^2 d (sin (1/x)/dx+sin1/x d (x^2)
=x^2cos1/x+2xsin1/x
dy/dx=x^2 d (sin (1/x)/dx+sin1/x d (x^2)
=x^2cos1/x+2xsin1/x
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limit law is not important answer is important...
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