Integral with suffix notation and the Divergence Theorem?

[davcrai]

Homework Statement

Trying to figure out the following integral was done...

int_v(u_i(partial)d(sigma_ij)/(partial)dx_j)dv

Homework Equations

Divergence theorem int_v(del.F)dv = int_s(F.n)ds

The Attempt at a Solution

I have the correct ans from one of my lectures,

int_s(u_in_jsigma_ij)ds - int_v((partial)d(u_i)/(partial)dx_j)sigma_ij)dv

I think its done by integration by parts but can't seem to get it to work out.
Also how do people get math script in here??

Homework Statement

Homework Equations

The Attempt at a Solution

 

[hunt_mat]

you do [ tex ] (no spaces) to start and [ /tex ] (no spaces) to finish.