Visualization of a numerical method for determining the type of local extrema of functions with two variables on a contour map without using derivatives. 2.1
[b]f[sub]2[/sub](x, y) = k[sub]f[/sub]*(-2 x⁵ y - 2y⁶ - 2x² y² + 2y³ + x³ + 3x² + 4y² + x y + x - y - 5)[br][size=85][br]*Detailed instructions and explanations for this applet can be found in the previous applets [url=https://www.geogebra.org/m/yf62eg4c]1[/url], [url=https://www.geogebra.org/m/v6pwykyh]2[/url] and [url=https://www.geogebra.org/m/djtadvjc]3[/url].[/size][/b]
