This interactive figure contains a parametric equations graphing calculator. [br][br]Enter functions [math]x(t)[/math], [math]y(t)[/math], and values [i]tmin [/i]and [i]tmax[/i]. The curve consisting of all points [math](x(t),y(t))[/math] for [math]tmin\le t\le tmax[/math] will be graphed.[br][br][b]Challenge[/b]. [br][list][*]Try [math]x(t)=cos(t)[/math], [math]y(t)=sin(t)[/math], for [math]0\le t\le2\pi[/math]. Did you expect the result?[/*][*]Find parametric equations for a circle of radius three centered at (1, 2).[br][/*][*]Parametrize a line segment from (-4, 3) to (4, 0) for [math]0\le t\le1[/math].[/*][/list]

[i]Developed for use with Thomas' Calculus, published by Pearson.[/i]