Denominator Command

Denominator[ <Function> ]

Returns the denominator of a function.

Example:

Denominator[5 / (x^2 + 2)] yields f(x)=(x² + 2).

Denominator[ <Number> ]

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

Note: See also Numerator Command and FractionText Command.

CAS Syntax

Denominator[ <Expression> ]

Returns the denominator of a rational number or expression.

Example:

Denominator[2 / 3 + 1 / 15] yields 15.