https://s0.wp.com/latex.php?latex=%5Cdisplaystyle+p%3D%5Cfrac%7B%5Calpha+%7D%7B%7B%7Bt%7D%5E%7B2%7D%7D%7D%7B%7Be%7D%5E%7B%5Cleft%28+%5Cfrac%7B-%5Cbeta+x%7D%7Bt%7D+%5Cright%29%7D%7D&bg=ffffff&fg=000&s=0&c=20201002