Function Command
From GeoGebra Manual
Revision as of 15:18, 9 July 2012 by Andrea.duringer (talk | contribs)
- Function[Function f, Number a, Number b]
- Yields a function graph, that is equal to f on the interval [a, b] and not defined outside of [a, b].
- Note: This command should be used only to restrict the display interval of a function. To restrict the function’s domain, create a conditional function using the If command, e.g.
f(x) = If[-1 < x < 1, x²]
. - Example:
f(x) = Function[x^2, -1, 1]
produces a function equal to x2 whose graph appears only in the interval [-1, 1]. However, whileg(x) = 2 f(x)
will produce the function g(x) = 2 x2 as expected, this function is not restricted to the interval [-1, 1].
- Note: This command does not work with Tools / Macros. Use the If command as above.
Following text is about a feature that is supported only in GeoGebra 4.2.
Example: Function[{2, 4, 0, 1, 0, 1, 0}] yields a triangular wave between x=2 and x=4.
Function[{-3, 3, 0, 1, 2, 3, 4, 5}] yields a linear equation with slope =1 between x=-3 and x=3. |