POSVARDEF

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

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