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<a accesskey="3" href="page.php?w=time-invariant_system&amp;p=2">3.Next</a>
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<p>In <a href="page.php?w=control_theory">control theory</a>, a <b>time-invariant</b> (<b>TI</b>) <b>system</b> has a time-dependent <b>system function</b> that is not a direct <a href="page.php?w=Function_%28mathematics%29">function</a> of time. Such <a href="page.php?w=Dynamical_system">system</a>s are regarded as a class of systems in the field of <a href="page.php?w=system_analysis">system analysis</a>. The time-dependent system function is a function of the time-dependent <b>input function</b>. If this function depends only indirectly on the</p><p>
<a accesskey="3" href="page.php?w=time-invariant_system&amp;p=2">3.Next</a>
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