Difference between revisions of "Numerator Command"

Revision as of 22:47, 27 December 2015

Numerator[ <Function> ]: Returns the numerator of the function.; Example:
Numerator[(3x² + 1) / (2x - 1)] yields f(x) = 3x² + 1.

Numerator[ <Number> ]: For a rational number returns it's numerator. It uses a numerical method, which limits this command to numbers with small denominator. For irrational output the numerator of a its continued fraction is returned.

Note: See also Denominator Command and FractionText Command.

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 and Numerator[Simplify[a + b/c]] yields a c + b

@@ Line 3: / Line 3: @@
 :Returns the numerator of the function.
 :{{example|1=<div><code><nowiki>Numerator[(3x² + 1) / (2x - 1)]</nowiki></code> yields ''f(x) = 3x² + 1''.</div>}}
+;Numerator[ <Number> ]
-{{note|1=
+:For a rational number returns it's numerator. It uses a numerical method, which limits this command to numbers with small denominator. For irrational output the numerator of a its [[ContinuedFraction Command|continued fraction]] is returned.
-:*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.
+{{note|1=See also [[Denominator Command]] and [[FractionText Command]].}}
-:*See also [[Denominator Command]].}}