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NumRealRoots
-- number of real roots of a polynomial
Syntax
NumRealRoots(F: RINGELEM): INT
Description
This function returns the number of real roots the polynomial
F
has. The coefficients of
F
must be rational.
Example
/**/ use QQ[x]; /**/ NumRealRoots(x^10 - (10^10*x-1)^2); 4
See Also
SturmSeq
RealRoots