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The Expansion of ENDP in the Induction Step (Step 2)

The Expansion of ENDP in the Induction Step (Step 2)

Subgoal *1/2' 
(IMPLIES (AND (CONSP A) 
              (EQUAL (APP (APP (CDR A) B) C) 
                     (APP (CDR A) (APP B C)))) 
         (EQUAL (APP (APP A B) C) 
                (APP A (APP B C)))). 
 

Note that this is Subgoal *1/2'.

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