Question

How to find the integral of:

x / ((4x+5) ^.5) dx

Answer 1

Set u = 4x + 5

x = (u-5)/4

dx = 1/4 du

Now just substitute those values and the integral will be easy

Answer 2

ok I got it thanks

Answer 3

I though it was u substitution, but the proffesor did it with integration by parts, but I could not understant how she did it...

Answer 4

Does it look like this:

\[\int\limits {x \over {\sqrt{4x+5}}}dx \]

?

Answer 5

yes

Answer 6

Then he took a long/wrong route. This is an example of substitution.

Answer 7

I thought so....But thank you