# Math Help - help with integrating this...

1. ## help with integrating this...

Hi,

how do u integrate 1/(1+e^t) ?

Thank you

2. Use the fact that $\frac{1}{1+e^x}=1-\frac{e^x}{1+e^x}$, and that if $u=1+e^x$, $du=e^x\,dx$.

--Kevin C.