# Math Help - indefinite integral

1. ## indefinite integral

xe^x2

Cant figure out how to do this.

2. Originally Posted by av8or91
xe^x2

Cant figure out how to do this.
Its
$\int x e^{x^2} dx$
or
$\int x (e^x)^2 dx$
or
$\int x e^{x2} dx$
or
$\int x e^x \, 2 \, dx$

??

Please, use brackets to make your problems more readable!

3. Originally Posted by General
Its
$\int x e^{x^2} dx$

Please, use brackets to make your problems more readable!
It is this one...Sorry I know i need to use substitution but cant figure out the rest.

4. Just in case a picture helps...

... where

... is the chain rule. Straight continuous lines differentiate downwards (integrate up) with respect to x, and the straight dashed line similarly but with respect to the dashed balloon expression (the inner function of the composite which is subject to the chain rule).

The general drift is...

And the rest...

Spoiler:

_________________________________________

Don't integrate - balloontegrate!

Balloon Calculus; standard integrals, derivatives and methods

Balloon Calculus Drawing with LaTeX and Asymptote!