Difference between revisions of "Numerator Command"
From GeoGebra Manual
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(replaced example in the "general" section because it refers to an input bar entry) |
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:Returns the numerator of the function. | :Returns the numerator of the function. | ||
:{{example|1=<div><code><nowiki>Numerator[(3x² + 1) / (2x - 1)]</nowiki></code> yields ''f(x) = 3x² + 1''.</div>}} | :{{example|1=<div><code><nowiki>Numerator[(3x² + 1) / (2x - 1)]</nowiki></code> yields ''f(x) = 3x² + 1''.</div>}} | ||
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| + | {{note|1= | ||
| + | :*For a fast numerical method (so long as the numbers aren't too big) you can use these in the ''Input Bar'': <code>CommonDenominator[a, a]</code> for denominator and <code>round(a*CommonDenominator[a, a])</code> for Numerator. | ||
| + | :*See also [[Denominator Command]].}} | ||
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==CAS Syntax== | ==CAS Syntax== | ||
;Numerator[ <Expression> ] | ;Numerator[ <Expression> ] | ||
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:*<code><nowiki>Numerator[2/3 + 1/15]</nowiki></code> yields ''11''. | :*<code><nowiki>Numerator[2/3 + 1/15]</nowiki></code> yields ''11''. | ||
:*If variables ''a, b'' and ''c'' haven't been previously defined in GeoGebra, then <code>Numerator[a/b]</code> yields ''a'' and <code>Numerator[a + b/c]</code> yields ''a c + b''</div>}} | :*If variables ''a, b'' and ''c'' haven't been previously defined in GeoGebra, then <code>Numerator[a/b]</code> yields ''a'' and <code>Numerator[a + b/c]</code> yields ''a c + b''</div>}} | ||
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Revision as of 12:13, 30 August 2015
- Numerator[ <Function> ]
- Returns the numerator of the function.
- Example:
Numerator[(3x² + 1) / (2x - 1)]yields f(x) = 3x² + 1.
Note:
- For a fast numerical method (so long as the numbers aren't too big) you can use these in the Input Bar:
CommonDenominator[a, a]for denominator andround(a*CommonDenominator[a, a])for Numerator. - See also Denominator Command.
- For a fast numerical method (so long as the numbers aren't too big) you can use these in the Input Bar:
CAS Syntax
- Numerator[ <Expression> ]
- Returns the numerator of a rational number or expression.
- Examples:
Numerator[2/3 + 1/15]yields 11.- If variables a, b and c haven't been previously defined in GeoGebra, then
Numerator[a/b]yields a andNumerator[a + b/c]yields a c + b
