User Guide

Additional Information
For information on topics including:
• Creating new rounding rules
• Setting the default rounding rule
• Creating a new interface to quantities with uncertainty
refer to the ?ScientificErrorAnalysis help page.
3.6 Restricting the Domain
By default, Maple computes in the complex number system. Most computa-
tions are performed without any restrictions or assumptions on the variables.
Maple often returns results that are extraneous or unsimplified when comput-
ing in the field of complex numbers. Using restrictions, you can more easily
and efficiently perform computations in a smaller domain.
Maple has facilities for performing computations in the real number system
and for applying assumptions to variables.
Real Number Domain
To force Maple to perform computations in the field of real numbers, use
the RealDomain package.
The RealDomain package contains a small subset of Maple commands re-
lated to basic precalculus and calculus mathematics, for example, arccos,
limit, and log, and the symbolic manipulation of expressions and formulae,
for example, expand, eval, and solve. For a complete list of commands,
refer to the ?RealDomain help page.
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