Are you using Tapatalk by any chance? I have code in place to let me know when posts have been edited, so I don't miss added content (it's better to...
So we have to show that $\int_{-\infty}^{+\infty} \left( \frac{A}{t^{k_1}}e^{-\frac{(x-s)^2}{4kt}} + \frac{B}{t^{k_2}}(x-s) e^{-\frac{(x-s)^2}{4kt}}...