- #1
KateyLou
- 17
- 0
Homework Statement
Integrating -e-4tsint
Homework Equations
Our tutor suggested we did this by integrating by parts in a cyclic fashion and things would cancel out
The Attempt at a Solution
Taking u = sint t; thus u'=cost
And v'=-e-4t; thus (1/4)e-4t
[tex]\int-e[/tex]4tsint = (1/4)e-4tsint-[tex]\int[/tex](1/4)e-4tcost
Taking u=cost thus u'= -sint
And v'=(1/4)e-4t; thus (-1/16)e-4t
[tex]\int-e[/tex]4tsint = (1/4)e-4tsint+(1/16)e-4tcost+(1/16)[tex]\int[/tex]e-4tsint
Nothing appears to cancel!]