Texas Instruments TI-89 사용자 설명서
Symbolic Manipulation
252
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Infinite recursions can occur when you define a substitution variable in terms of
itself.
itself.
When you enter a substitution that causes an infinite recursion:
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Internally, an expression is sorted according to the automatic simplification rules.
Therefore, products and sums may not match the order in which you entered them.
Therefore, products and sums may not match the order in which you entered them.
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An error message is displayed.
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When you press
N, an error is
shown in the history area.
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As a general rule, you should
substitute for a single variable.
substitute for a single variable.
sin(x)|x=x+1
Substitutes sin(x+1), sin(x+1+1),
sin(x+1+1+1), etc
sin(x+1+1+1), etc