Update app.py

app.py

@@ -65,44 +65,6 @@ def generate_math_solution(api_key, problem_text, history=None):
         error_message = f"Error: {str(e)}"
         return error_message, history
 
-# Function to generate practice problems
-def generate_practice_problem(api_key, topic, difficulty, history=None):
-    if not api_key.strip():
-        return "Please enter your OpenRouter API key.", history
-    
-    if not topic.strip():
-        return "Please specify a math topic.", history
-    
-    try:
-        client = OpenAI(
-            base_url="https://openrouter.ai/api/v1",
-            api_key=api_key,
-        )
-        
-        prompt = f"""Generate a {difficulty} level math problem related to {topic}.
-        The problem should be challenging but solvable, and relevant to a student studying {topic}.
-        Only provide the problem statement, not the solution."""
-        
-        completion = client.chat.completions.create(
-            model="microsoft/phi-4-reasoning-plus:free",
-            messages=[
-                {"role": "system", "content": "You are an expert math teacher who creates engaging practice problems."},
-                {"role": "user", "content": prompt}
-            ],
-            extra_headers={
-                "HTTP-Referer": "https://advancedmathtutor.edu",
-                "X-Title": "Advanced Math Tutor",
-            }
-        )
-        
-        practice_problem = completion.choices[0].message.content
-        
-        return practice_problem, history
-        
-    except Exception as e:
-        error_message = f"Error: {str(e)}"
-        return error_message, history
-
 # Function to verify API key format
 def validate_api_key(api_key):
     # This is a simple check - OpenRouter keys typically start with "sk-or-"
@@ -140,6 +102,16 @@ def create_demo():
                             placeholder="Enter your math problem here...",
                             lines=5
                         )
+                        example_problems = gr.Examples(
+                            examples=[
+                                ["Solve the quadratic equation: 3x² + 5x - 2 = 0"],
+                                ["Find the derivative of f(x) = x³ln(x)"],
+                                ["Calculate the area of a circle with radius 5 cm"],
+                                ["Find all values of x that satisfy the equation: log₂(x-1) + log₂(x+3) = 5"]
+                            ],
+                            inputs=[problem_input],
+                            label="Example Problems"
+                        )
                         with gr.Row():
                             submit_btn = gr.Button("Solve Problem", variant="primary")
                             clear_btn = gr.Button("Clear")
@@ -163,49 +135,6 @@ def create_demo():
                     outputs=[solution_output, conversation_history]
                 )
             
-            with gr.TabItem("Practice Problems"):
-                with gr.Row():
-                    with gr.Column(scale=1):
-                        practice_api_key = gr.Textbox(
-                            label="OpenRouter API Key", 
-                            placeholder="Enter your OpenRouter API key (starts with sk-or-)",
-                            type="password"
-                        )
-                        topic_input = gr.Textbox(
-                            label="Math Topic", 
-                            placeholder="e.g., Algebra, Calculus, Geometry...",
-                        )
-                        difficulty_input = gr.Dropdown(
-                            label="Difficulty Level",
-                            choices=["Easy", "Medium", "Hard", "Challenge"],
-                            value="Medium"
-                        )
-                        generate_btn = gr.Button("Generate Practice Problem", variant="primary")
-                    
-                with gr.Column(scale=2):
-                    practice_problem_output = gr.Markdown(label="Practice Problem")
-                    solve_practice_btn = gr.Button("Solve This Practice Problem")
-                
-                # Store practice problem history
-                practice_history = gr.State(value=None)
-                
-                # Button actions for practice problems
-                generate_btn.click(
-                    fn=generate_practice_problem,
-                    inputs=[practice_api_key, topic_input, difficulty_input, practice_history],
-                    outputs=[practice_problem_output, practice_history]
-                )
-                
-                # Button to transfer practice problem to solver
-                solve_practice_btn.click(
-                    fn=lambda problem: problem,
-                    inputs=[practice_problem_output],
-                    outputs=[problem_input]
-                )
-                
-                # Add instructions for manual tab switching
-                gr.Markdown("*After clicking 'Solve This Practice Problem', please switch to the Problem Solver tab manually*")
-            
             with gr.TabItem("Help"):
                 gr.Markdown("""
                 ## How to Use the Advanced Math Tutor
@@ -219,24 +148,23 @@ def create_demo():
                 - Type or paste your math problem in the input field
                 - Click "Solve Problem" to get a detailed step-by-step solution
                 - The solution will include explanations for each step
-                
-                ### Practice Problems
-                - Go to the Practice Problems tab
-                - Enter a math topic (e.g., "Integration", "Linear Equations")
-                - Select a difficulty level
-                - Click "Generate Practice Problem" to get a new problem
-                - Use "Solve This Practice Problem" to transfer it to the solver
+                - You can also try one of the provided example problems
                 
                 ### Tips for Best Results
                 - Be specific in your problem description
                 - Include all necessary information
                 - For complex equations, use clear notation
+                - For algebraic expressions, use ^ for exponents (e.g., x^2 for x²)
+                - Use parentheses to group terms clearly
                 
-                ### Example Problems
-                Try these example problems:
-                - Solve the quadratic equation: 3x² + 5x - 2 = 0
-                - Find the derivative of f(x) = x³ln(x)
-                - Calculate the area of a circle with radius 5 cm
+                ### Types of Problems You Can Solve
+                - Algebra (equations, inequalities, systems of equations)
+                - Calculus (derivatives, integrals, limits)
+                - Trigonometry
+                - Geometry
+                - Statistics and Probability
+                - Number Theory
+                - And many more!
                 """)
         
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