Numerator Command

Numerator( <Function> )

Returns the numerator of the function.

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.

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