Update app.py

app.py

@@ -403,6 +403,13 @@ STRICT REQUIREMENTS:
    - Put each solution step on its own line in $$ $$
    - DO NOT use \\begin{{aligned}} or similar environments
 5. Include a detailed solution
+   - If the question involves geometry make sure to identify any general geometric formulas that apply, For example:
+        * Areas/volumes of common shapes and solids
+        * Cross-sectional areas of geometric figures
+        * Arc lengths and sector areas
+   - When setting up differential equations either in calculus or differential equation applications
+        * carefully consider the direction of change in variables
+        * ensure integration bounds align with the physical direction of the process being modeled
 6. Maintain clear formatting
 7. At the end of the LaTeX solution output, print SymPy code that you would use to solve or verify the main equations in the question.
 8. When writing SymPy code to verify solutions: