a x = 2 ( a r c s i n ( p v 0 e x p ( a y ) − a r c s i n ( p v 0 ) ) {\displaystyle {\begin{aligned}ax=2(\ arcsin\left(pv_{0}{\rm {\ exp\ }}\left(ay\right)-{\rm {\ arcsin\ }}\left(pv_{0}\right)\right)\end{aligned}}}
