POSVARDEF: Difference between revisions

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<code>POSVARDEF x</code> tells iMath that <code>x</code> always has a positive real value and therefore <code>abs(x) = x</code>.
<code>POSVARDEF x</code> tells iMath that <code>x</code> always has a positive real value and therefore <code>abs(x) = x</code>.
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[[REALVARDEF]]
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}}
[[Category:Definition]]
[[Category:Declaration]][[Category:Definition]]

Latest revision as of 17:50, 21 September 2018

Syntax

POSVARDEF symbol


Implemented in iMath since version 2.2.0 or earlier.

Explanation

Defines the symbol to be positive (and real-valued). This allows iMath to evaluate some functions immediately, e.g. absolute value.


Example

POSVARDEF x tells iMath that x always has a positive real value and therefore abs(x) = x.

See also

REALVARDEF