# Problem with Integrating by parts

1. Jul 23, 2012

### aries0152

I would like to integrate by parts this term-
$$\mu^2 (\nabla^2)^{-1} (\nabla\times B)\dot{B}$$

Here $B$ is a vector and $\dot{B}$ is the time derivative of B. And $\mu$ is just a constant.

Can anyone help me?

Last edited by a moderator: Jul 23, 2012
2. Jul 23, 2012

### algebrat

Wow, where did you encounter this, i can't see tex where im sitting, but it looks like you have the inverse laplacian?

3. Jul 23, 2012

### algebrat

AND you have a vector adjacent to a vector? What class is this for? This is either over my head (and/or) you took a bad turn somewhere in calculations leading up to this.

4. Jul 24, 2012

### aries0152

Yes. there is a inverse laplacian.

It's a problem of M.Sc. And I am stuck with this term

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