REALVARDEF: Difference between revisions
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(Created page with "{{Keyword | <code>REALVARDEF symbol</code> | Defines the symbol to be real-valued. This allows iMath to evaluate some functions immediately, e.g. complex conjugation. | 3=...") |
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Defines the symbol to be real-valued. This allows iMath to evaluate some functions immediately, e.g. complex conjugation. | Defines the symbol to be real-valued. This allows iMath to evaluate some functions immediately, e.g. complex conjugation. | ||
Note that the real-valued symbol is not identical with another symbol that has the same name but a different domain. To avoid confusion, always define your symbols as real before you use them for the first time. | |||
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3= | 3= | ||
<code>REALVARDEF x</code> tells iMath that <code>x</code> always has a real value and therefore <code>conjugate(x) = x</code>. | <code>REALVARDEF x</code> tells iMath that <code>x</code> always has a real value and therefore <code>conjugate(x) = x</code>. | ||
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[[POSVARDEF]] | |||
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[[Category:Definition]] | [[Category:Declaration]][[Category:Definition]] | ||
Latest revision as of 20:39, 21 February 2025
Syntax
REALVARDEF symbol
Implemented in iMath since version 2.2.0 or earlier.
Explanation
Defines the symbol to be real-valued. This allows iMath to evaluate some functions immediately, e.g. complex conjugation.
Note that the real-valued symbol is not identical with another symbol that has the same name but a different domain. To avoid confusion, always define your symbols as real before you use them for the first time.
Example
REALVARDEF x tells iMath that x always has a real value and therefore conjugate(x) = x.