### 4.3.13. Parametric Curves

Curve[expression e1, expression e2, parameter t, number a, number b]: Cartesian parametric curve for the given x-expression e1 and y-expression e2 (using parameter t) within the given interval [a, b]

Example: c = Curve[2 cos(t), 2 sin(t), t, 0, 2 pi]

Derivative[curve c]: Derivative of the curve c

Note: Parametric curves can be used like functions in arithmetic expressions.

Example: Input c(3) returns the point at parameter position 3 on curve c.

Note: Using the mouse you can also place a point on a curve using the mode New point (see mode New point; also see command Point). Since the parameters a and b are dynamic you could use slider variables there (see mode Slider).

Related Topics

4.3. Commands

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