Question

integrate (1/4)[(e^(4x))/(1+e^(4x))]e^(4x)

Answer 1

\[(1/4)\ \int\limits_{}^{} \frac{ e ^{4x} }{ 1 + e ^{4x} }e ^{4x}dx\]

Answer 2

\[\int\dfrac{1}{4}\left[\dfrac{e^{4x}}{1+e^{4x}}\right]e^{4x}dx\]?

You beat me @adamaero

Answer 3

haha

Answer 4

Have you tried u-sub?

Answer 5

no I haven't I'm totally confused right now....

Answer 6

combine the e^4x

Answer 7

I know how to integrate but I just cant' think of how to use the u substitution, which one would be my u?

Answer 8

u = 1 + 4e^x

Answer 9

ok so du would be 1/4du

Answer 10

how?

Answer 11

can someone explain the steps to me? I'm doing integrals also, don't really understand how du=1/4dx

Answer 12

are you going to take this @eescobedo1 ?

Answer 13

i think he left