Given command for Hp prime?

[Lord_Spooglypuff]

(10-28-2020 12:55 PM)Arno K Wrote:  You simply enter: solve(v^2=u^2+2*a*s,a)|v=50,u=5 using CAS, before that you should make sure the variables are empty: purge(s), purge(a). The | can be taken from the patterns found on the keyboard.
Arno

I did exactly what you did, but all i get is a syntax error. Do you know whats going on?