Curve Command Examples

Details

Action

Draws the image of a curve in 2 dimensions.

A parametric function is often represented by a pair of equations for x and y in terms of a third variable t. The pair of equations:
x = t²
y = 2t
defines a mapping: t returns (x,y)=(t², 2t) . For every value of t there is a corresponding point [t², 2t] in the plane. In this case, for every value of t, we get a point on the parabola y² = 4x .

make parabola(t) [t^2, 2*t]

draw the curve parabola using color lred penwidth 2

Draws the graph of the parametric function.