借助数学软件绘制出函数的图形和相应的等高线,通过观察等高线的走向确定极值点可能存在的区域,在该区域内选定初始点就可以快速地求得优化问题的极值.该方法对优化问题的初始点选取具有一定的指导价值.
Using mathematics software, figure and contour line of the function are plotted, the possible region of extremum is found by observing the trend of contour line. Optimization problem can rapidly be solved when initial points are selected in above region. This method has some value in choosing initial points of optimization problem in practice.