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based on an earlier version of the Wolfram Language.
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ExcludedForms

ExcludedForms
is an option for FullSimplify which can be set to a list of patterns for expressions that should not be touched if they are encountered at intermediate steps in the operation of FullSimplify.
  • A setting such as Gamma[_] will cause FullSimplify to treat gamma functions as elementary objects which should not be transformed.
This gives no simplification:
Excluding transformations of (x-2)^10 allows you to expand the remaining terms:
This gives a result in terms of Arg[x]:
This specifies that Log[x] should not be transformed:
This gives no simplification:
In[1]:=
Click for copyable input
Out[1]=
Excluding transformations of (x-2)^10 allows you to expand the remaining terms:
In[2]:=
Click for copyable input
Out[2]=
 
This gives a result in terms of Arg[x]:
In[1]:=
Click for copyable input
Out[1]=
This specifies that Log[x] should not be transformed:
In[2]:=
Click for copyable input
Out[2]=
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