- #1

chwala

Gold Member

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- Homework Statement
- see attached

- Relevant Equations
- integration

Q. 3(b).

This is a textbook problem; unless i am missing something ...the textbook solution is wrong!

solution;

Mythoughts;

##f(x)=2\cos 3x-3\sin 3x## ...by using the product rule on ##\dfrac{d}{dx} (e^{2x} \cos 3x)##.

This is a textbook problem; unless i am missing something ...the textbook solution is wrong!

solution;

Mythoughts;

##f(x)=2\cos 3x-3\sin 3x## ...by using the product rule on ##\dfrac{d}{dx} (e^{2x} \cos 3x)##.