Update app.py

app.py

@@ -1005,6 +1005,7 @@ def check_and_resolve_discrepancy(initial_response, sympy_output):
         then please write "SYMPY_CORRECT: True" on its own line and say that the answers are consistent and briefly explain why. 
         Note that you may use numerical analysis to check whether the two answers are consistent,
         and it may be the case that the two answers evaluate to the same expression or number.
+        - Example: 2/sqrt(13) and 2*sqrt(13)/13 are equivalent
         
         If the two answers are inconsistent with each other then please:
         1. Identify which solution is correct