Find ##f(x)## in the problem involving integration

[chwala]

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 $\dfrac{d}{dx} (e^{2x} \cos 3x)$.

 

[Orodruin]

Your solution seems fine.

 

[nuuskur]

Please get in the habit of posting full problem statements without expressing them exclusively with pictures.

 

[chwala]

Please get in the habit of posting full problem statements without expressing them exclusively with pictures.

Noted.