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# Derivatives

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Write down the derivative of each of the following functions.

f(x)=e^-2x. (thats e to the power minus2x).
g(x)=sin(7x).

Hence by using the product rule,differtiate k(x)=e^-2xsin(7x)

##### Solution Summary

Derivatives are found. The product rule is differentiated.

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Hi, here is the solution...

(i)f(x) = e^-2x

f '(x) = e^ -2x (-2)

f'(x)= -2 ...

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