!! used as default html header if there is none in the selected theme.
This module is a graphical exercise on parametric curves in the cartesian plane.
A parametric curve is determined by two real functions f and g of a parameter t. This curve is therefore the set of points (x=f(t),y=g(t)) for different values of t. On the other hand, we also have the graphs of the two coordinate functions f and g which are curves.
This exercise can either present the two curves of f and g and ask you to recognize the parametric curve (x=f(t),y=g(t)) among others, or present the parametric curve and ask you to recognize the curves of f and g.
Please take note that WIMS pages are interactively generated; they are not ordinary HTML files. They must be used interactively ONLINE. It is useless for you to gather them through a robot program.