Difference between revisions of "Numerator Command"

Revision as of 16:59, 26 December 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 and round(a*CommonDenominator[a, a]) for Numerator.
See also Denominator 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 14: / Line 14: @@
 :{{examples|1=<div>
 :*<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[Simplify[a + b/c]]</code> yields ''a c + b''</div>}}