G grapz Junior Member Joined Jan 13, 2007 Messages 80 Jan 17, 2008 #1 Indefinite integral of ( sin x ) / ( 1 + cos^2 x ) dx i sub u = 1 + cos^2 x , but i can't figure it out after this step. THe sinx dx goes away but i'm left with other problems
Indefinite integral of ( sin x ) / ( 1 + cos^2 x ) dx i sub u = 1 + cos^2 x , but i can't figure it out after this step. THe sinx dx goes away but i'm left with other problems
D Deleted member 4993 Guest Jan 17, 2008 #2 Re: Integrationn grapz said: Indefinite integral of ( sin x ) / ( 1 + cos^2 x ) dx i sub u = 1 + cos^2 x , but i can't figure it out after this step. THe sinx dx goes away but i'm left with other problems Click to expand... \(\displaystyle \int\, \frac{Sin(x)}{1\, + \, Cos^2(x)}\, dx\) Substitute Cos(x) = u -Sin(x) dx = du Now continue....
Re: Integrationn grapz said: Indefinite integral of ( sin x ) / ( 1 + cos^2 x ) dx i sub u = 1 + cos^2 x , but i can't figure it out after this step. THe sinx dx goes away but i'm left with other problems Click to expand... \(\displaystyle \int\, \frac{Sin(x)}{1\, + \, Cos^2(x)}\, dx\) Substitute Cos(x) = u -Sin(x) dx = du Now continue....
