BUILT-IN MATHEMATICA SYMBOL
Denominator
- Denominator picks out terms which have superficially negative exponents. Numerator picks out all remaining terms.
- An exponent is "superficially negative" if it has a negative number as a factor.
- The standard representation of rational expressions as products of powers means that you cannot simply use Part to extract denominators.
- Denominator can be used on rational numbers.
Extract denominator of a rational number:
| Out[1]= |  |
Extract denominator of a rational expression:
| Out[2]= |  |
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