Update app.py

app.py

@@ -383,7 +383,13 @@ STRICT REQUIREMENTS:
    - Include print statements for ALL calculations and results
    - Print intermediate steps and final answers
    - Print variable values after they are computed
-   - Format numerical results using evalf() for decimal"""       
+   - For numeric calculations:
+     * Use Float() for decimal numbers
+     * Use float() for final printing of results
+     * Avoid evalf() as it may cause errors
+    - When working with series/sequences:
+     * Use Float() for sequence terms
+     * Convert sums to float() before printing"""       
         else:
             system_prompt = f"""You are an expert mathematics professor creating a {difficulty_params['description']} exam question.
 STRICT REQUIREMENTS:
@@ -427,7 +433,13 @@ STRICT REQUIREMENTS:
    - Include print statements for ALL calculations and results
    - Print intermediate steps and final answers
    - Print variable values after they are computed
-   - Format numerical results using evalf() for decimal"""
+   - For numeric calculations:
+     * Use Float() for decimal numbers
+     * Use float() for final printing of results
+     * Avoid evalf() as it may cause errors
+   - When working with series/sequences:
+     * Use Float() for sequence terms
+     * Convert sums to float() before printing"""
 
 #Consider
    #When writing SymPy code: