# Difference between revisions of "If Command"

From GeoGebra Manual

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<div class="note">'''Note:''' | <div class="note">'''Note:''' | ||

* 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 Command|Derivative]], [[Integral Command|Integral]], and [[Intersect Command|Intersect]]. | * 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 Command|Derivative]], [[Integral Command|Integral]], and [[Intersect Command|Intersect]]. | ||

− | * Example: | + | * 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''. |

* See the section [[Boolean Variables and Operations]] for the symbols used in conditional statements. | * See the section [[Boolean Variables and Operations]] for the symbols used in conditional statements. | ||

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## Revision as of 16:41, 3 November 2009

- 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*.

**Note:**

- 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*. - See the section Boolean Variables and Operations for the symbols used in conditional statements.