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Interval valuation of expression

There are few exceptions for which an interval evaluation of an expression cannot be computed for some ranges of the unknowns that appear in the expression. Namely the following problems may occur when intervals are involved:

In that case the BIAS/Profil interval arithmetic package will issue a fatal error. Hence attention should be paid to these evaluation problems. ALIAS-Maple offers strategies to deal with these problems, see sections 2.1.4,2.1.5.

Jean-Pierre Merlet 2012-12-20