Hi Everyone! I just need some guidance on this problem. I seem to have trouble what integration technique I need to use on integrals of this type. 1. The problem statement, all variables and given/known data integrate 1/(25-x^2) 2. Relevant equations sqrt(a^2-u^2) arcsin(u/a) 3. The attempt at a solution Would I be able to use trig substitution for this type of integral? It almost fits with the arcsin but the square root is missing.