说明：  We can now compare the convergence speeds and iteration numbers of the methods. Since Lagrange Multiplier Method and Sequential Linear Programming Method include manual calculations elapsed time comparison is not applicable for them. There is also another important point. In Nelder and Mead Method although the code output for iteration number is 2 it is different in reality. We used while function in the code this repeats the calculations and does not affect the iteration number. On the other hand elapsed time of codes give us enough information to compare the codes.