This interactive figure is a bit of a game. Several graphs are drawn, and you must figure out which represents the "original" function [math]f[/math], which is the graph of [math]f'[/math], and which is the graph of [math]f''[/math]. [br][br]Each time you guess correctly, you get a point. In "challenging" and "hard" game modes, you get more points for each correct answer. Challenge yourself to get 30 points!