This solver is used to find the solution of non-linear equation system. It uses Newton-Rasphson algorithm. The process will start with initial values and will be iterated until it finds the nearly exact solutions that satisfy the tolerance given &epsilon. The iteration process will go with limited number of trials and loops. With each trial the program may return a set of solutions or roots or "not found" notice with that curtain trial run. You can manage to repeat trial as many as you can.
After several trials with "not found" you should manage to enter initial values!