My question is similar to that posted here.
I have the following integral that I want to determine in a closed form. My uncertainty arises due to the addition term within the Error function:
$$\mathcal{I} = \int_{-L}^L e^{-\beta (x - B)^2}\cdot \text{Erf}\left[\alpha \, (A - x)\right]\,dx.$$
I have simplified the notation by removing constants. $\alpha$ is a complex number whereas $A$ and $B$ are positive real numbers.
I would like to see the steps in the evaluation since I have other similar integrals to evaluate (varying powers of x in the exponential terms etc). Thanks.