how do i integrate
(cos x)^2 / (e^x) + 1
i tried integration by parts but that made it even harder and i can't seem to figure out any trig substitution, can this be integrated???
this is the same answer as i got ... i thought it was wrong cause it seemed too big
now do you know how i can find the lim as x goes to infinity of this expression
this is involving a series problem in order to find the upper error bound and the remainder