Update app.py

app.py

@@ -812,7 +812,11 @@ j. **Concluding and Intuitive Explanations**
    - Conclude with an intuitive explanation of why the result makes sense, possibly connecting it to known theorems or simple examples.  
    - In notes after the proof, highlight potential sources of confusion for students and clarify tricky aspects of the problem.  
 
-10. When analyzing area problems with multiple curves and quadrant restrictions, bounds mentioned in the problem that would lead to analyzing areas that fall outside the required region should be ignored
+10. If you specify a quadrant restriction (e.g. "in the first quadrant") 
+in a problem with calculating area between lines/curves or volume between surfaces,
+make sure the question is CLEAR about what regions you intend the solution.
+- NOT CLEAR example: "Find the area of the region bounded by the curves y = sin(x), y = cos(x), and x = 7*pi/4 in the first quadrant."
+- CLEAR example: "Find the area of the region bounded by the curves y = sin(x), y = cos(x), and x = 7*pi/4. Then find the area of that region that intersects with the first quadrant."
 
 11. When finding critical points in multivariable calculus:
    - Always check what happens when any variable equals zero (except where undefined)