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| TraceBackward is an option for Trace and related functions which specifies whether to include preceding expressions on the evaluation chain that contains the pattern form sought. |
A recursive definition for finding Fibonacci numbers:
Show only what additions of positive integers are required:
Show the beginning of the evaluation chain that leads to each addition:
Show all intermediate evaluations that led to each addition:
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| © 2008 Wolfram Research, Inc. |
EXAMPLES
Basic Examples 
