[size=85][b] f(x, y) = 3ℯ[sup]-(y + 1)² - x²[/sup] (x - 1)² - ℯ[sup]-(x + 1)² - 8²[/sup] / 3 + ℯ[sup]-x² - y²[/sup] (10x³ - 2x + 10y⁵)[br][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].[/b][/size]