An integration problem

1. Jun 8, 2007

cosmology

who can help me?how to derive (1)

2. Jun 9, 2007

siddharth

Nobody's going to do your work for you. The guidlines of this forum state that you need to show some work before you get help.

3. Jun 9, 2007

chaoseverlasting

This integral isn't tough, its just bloody long!!! For the inner integral:

$$\frac{a-b}{c}ln(\frac{b+c-cx_2}{b})-\frac{a}{c}x_2$$

Here, $$a=1-x_2$$

$$b=\lambda^2(1-x_2)$$

$$c=q^2x_2-\lambda^2$$.

For the second integral, you're on your own mate.... good luck.