Visualization of a numerical method for determining the type of local extrema of functions with two variables on a contour map without using derivatives. 3.1
f(x, y) = 3 exp(-(y+1)2-x2) (x-1)2-exp(-(x+1)2-82)/3+exp(-x2-y2) (10x3-2 x+10y5)
*Detailed instructions and explanations for this applet can be found in the previous applets 1, 2 and 3. 