Basically
So you "just" need to simplify the integrand. I know you need to use the gaussian at some point and maybe competing the square for the exponents.
It thus becomes:
Basically
So you "just" need to simplify the integrand. I know you need to use the gaussian at some point and maybe competing the square for the exponents.
It thus becomes:
Open up the paranthesis for and then distribute over by . That should do it.