# Difference between revisions of "If Command"

From GeoGebra Manual

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* Example: <tt>f(x) = If[x < 3, sin(x), x^2]</tt> yields a function that equals ''sin(x)'' for ''x < 3'' and ''x<sup>2</sup>'' for ''x ≥ 3'' | * Example: <tt>f(x) = If[x < 3, sin(x), x^2]</tt> yields a function that equals ''sin(x)'' for ''x < 3'' and ''x<sup>2</sup>'' for ''x ≥ 3'' | ||

− | {{note|See the section [[Boolean values]] for the symbols used in conditional statements. | + | {{note|See the section [[Boolean values]] for the symbols used in conditional statements.}} |

## Revision as of 00:32, 4 February 2011

- 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*.

Warning: | Both objects must be of the same type. |

### Conditional Functions

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*x*for^{2}*x ≥ 3*

**Note:**See the section Boolean values for the symbols used in conditional statements.