#int\ e^(-7x)*cos(2x)dx =# ?
2 Answers
Explanation:
Integrate by parts:
and then again:
the same integral is now on both sides of the equation so we can solve for it:
See below.
Explanation:
Using de Moivre's identity
but
and finally
Integrate by parts:
and then again:
the same integral is now on both sides of the equation so we can solve for it:
See below.
Using de Moivre's identity
but
and finally