|  |  D.12.8.8 maxabs Procedure from libraryrootsur.lib(see  rootsur_lib).
 
Example:Usage:
maxabs(p); poly p
Return:
number: an upper bound for the largest absolute value of a root of p
Assume:
p is a univariate polynomial with rational coefficients
 See also:
 sturm.|  | LIB "rootsur.lib";
ring r = 0,x,dp;
poly p = (x+2)*(x-1)*(x-5);
maxabs(p);
==> 11
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