Number of function evaluations: 37 Vertices of final 3-d simplex and function values at the vertices: i x[i] y[i] z[i] function 1 0.490676 0.605329 0.717563 -0.400000 2 0.474908 0.597644 0.687565 -0.400000 3 0.530209 0.590894 0.684828 -0.400000 4 0.507350 0.633569 0.698853 -0.400000 True minimum is at (0.5,0.6,0.7)