BUILT-IN MATHEMATICA SYMBOL

# TimeConstraint

TimeConstraint
is an option for various algorithmic functions which specifies how long to spend trying a particular transformation or part of an algorithm.

## DetailsDetails

• specifies that a maximum of t seconds of CPU time should be spent trying a particular transformation or part of an algorithm.
• specifies that there should be no limit on the CPU time allowed.
• In functions such as Simplify and FullSimplify, settings for TimeConstraint give only the maximum time to be spent doing a particular transformation on a particular subpart; the total time spent processing the whole expression may be considerably larger.
• Changing the setting for TimeConstraint will never affect the validity of a result obtained from functions like Simplify or FullSimplify, but smaller settings may prevent the simplest possible form from being found.
• Since different computer systems run at different speeds, the same setting for TimeConstraint can lead to different results on different systems.

## ExamplesExamplesopen allclose all

### Basic Examples (2)Basic Examples (2)

This takes a long time, due to trigonometric expansion, but does not yield a simplification:

 Out[1]=

TimeConstraint limits the time spent on any single transformation:

 Out[2]=

A similar example, where the transformation yields a simplification:

 Out[1]=

In this case setting TimeConstraint prevents some simplification:

 Out[2]=