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Derivatives

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Solve the following two equations. In each case, determine dy/dx:
a.)y=xcos(2x^2)
Is this right? y'=x(-sin)(2x^2)(4x)
=-4x^2sin(2x^2)

b.)y=xe^-x^2
Is this right? y'=-xe^-x^2+1(e^-x)
=-xe^-x^2+e^-x

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Derivatives are found and corrected.

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a) What you did is not correct.
y=xcos(2x^2)
...

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