Numerator Command

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 its numerator. It uses a numerical method, which limits this command to numbers with small denominator. For irrational input the numerator of its continued fraction is returned.

Note: See also Denominator Command and FractionText Command.

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 and Numerator(Simplify(a + b/c)) yields a c + b