Search for a minimum of Himmelblau's function F(X1,X2) = (X1^2 + X2 - 11)^2 + (X1 + X2^2 - 7)^2
from the starting point with coordinates X1=7, X2=8.
Lower and upper boundaries for each coordinate are -10 and 10.
The function has four local minima at (-2,805118; 3,131312), (-3,779310; -3,283186), (3,584428; -1,848126), (3,0; 2,0)
and has zero values at all these points.
See details at http://www.chem-astu.ru/science/opt/eindex.shtml
# Code of the optimized function:
pow ({1}*{1}+{2}-11, 2) +
pow ({1}+{2}*{2}-7, 2)
# Type of the optimization (1 - search for a maximum, -1 - search for a minimum):
-1
# Boundaries (on left and right) and starting point coordinates (middle) separated by comma. If a boundary is absent, a comma MUST BE PRESENT.
-10, 7, 10
-10, 8 ,10