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The package ratpow provides functions that find the exponents
of the denominator in a CRE polynomial. If the exponents in the denominator
are needed instead ratdenom can be used to extract this denominator
first. Returned coefficients are in CRE form except for numbers.
In order to get a list of vars in a CRE polynomial showratvars can be
used.
For information about CREs see also rat, ratdisrep and
showratvars.
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