# Curve Command

From GeoGebra Manual

- Curve( <Expression>, <Expression>, <Parameter Variable>, <Start Value>, <End Value> )
- Yields the Cartesian parametric curve for the given
*x*-expression (first <Expression>) and*y*-expression (second <Expression>) (using parameter variable) within the given interval [*Start Value*,*End Value*]. **Example:**`Curve(2 cos(t), 2 sin(t), t, 0, 2π)`

creates a circle with radius*2*around the origin of the coordinate system.

- Curve( <Expression> , <Expression> , <Expression> , <Parameter Variable> , <Start Value> , <End Value> )
- Yields the 3D Cartesian parametric curve for the given
*x*-expression (first <Expression>),*y*-expression (second <Expression>) and*z*-expression (third <Expression>) (using parameter variable) within the given interval [*Start Value*,*End Value*]. **Example:**`Curve(cos(t), sin(t), t, t, 0, 10π)`

creates a 3D spiral.

**Notes:***End Value*must be greater than or equal to*Start Value*and both must be finite.*x*,*y*and*z*are not allowed as parameter variables.- See Curves for details, also see the Derivative Command and the Parametric Derivative Command.