1. The problem statement, all variables and given/known data Hi, I seem to have this issue with solving the a system of 3 equations when trying to find the critical points for a 3 variable function. 2. Relevant equations 3. The attempt at a solution It always keeps happening. I keep getting stuck when solving these equations. Every single question has its own little trick in it on how to solve these equations Any ideas? I need to do this as the first part in solving my question. I need to find the critical points then use the second derivative test to determine the type of critical points. I keep going around and around with equations, trying to fit them into other ones and it leads me nowhere.