Hi
Im Have this equation and I have the result but I canīt get from a to b....
Hi
There are several errors in your calculations
At the end of the 1st page there is a + instead of a - inside the square root. So is it in the 2 first equations in the second page
Then you made an error in the second equation of the second page in the simplification by $\displaystyle \alpha$
The right equation is $\displaystyle \beta e^{-\alpha r^V} = \frac{1+\sqrt{1+k_2 \alpha^2}}{k_1 \alpha}$
But I agree with you : the disappearance of $\displaystyle \beta$ is strange