From GeoGebra Manual
- If[Condition, Object]
- Yields a copy of the object if the condition evaluates to true, and an undefined object if it evaluates to false.
- If[Condition, Object a, Object b]
- Yields a copy of object a if the condition evaluates to true, and a copy of object b if it evaluates to false.
- The If command can be used to create conditional functions. Such conditional functions may be used as arguments in any command that takes a function argument, such as Derivative, Integral, and Intersect.
- Example: f(x) = If[x < 3, sin(x), x^2] yields a function that equals sin(x) for x < 3 and x2 for x ≥ 3.
- See the section Boolean values for the symbols used in conditional statements.