Update app.py

app.py

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+import streamlit as st
+import plotly.graph_objs as go
+import numpy as np
+
+# Basic arithmetic functions
+def add(x, y):
+    return x + y
+
+def subtract(x, y):
+    return x - y
+
+def multiply(x, y):
+    return x * y
+
+def divide(x, y):
+    if y == 0:
+        return "Error! Division by zero."
+    return x / y
+
+# Advanced mathematical functions
+def power(x, y):
+    return x ** y
+
+def square_root(x):
+    if x < 0:
+        return "Error! Cannot calculate square root of a negative number."
+    return x ** 0.5
+
+def logarithm(x, base=10):
+    if x <= 0:
+        return "Error! Logarithm is undefined for non-positive numbers."
+    return np.log(x) / np.log(base)
+
+# Trigonometric functions
+def sin(x):
+    return np.sin(x)
+
+def cos(x):
+    return np.cos(x)
+
+def tan(x):
+    return np.tan(x)
+
+# Graphing function
+def plot_function(func, x_range):
+    x = np.linspace(x_range[0], x_range[1], 100)
+    y = func(x)
+    fig = go.Figure(data=go.Scatter(x=x, y=y, mode='lines'))
+    fig.update_layout(title=f'Graph of {func.__name__}(x)', xaxis_title='x', yaxis_title='y')
+    return fig
+
+# Streamlit app
+def calculator():
+    st.title("Enhanced Calculator with Graphs")
+
+    # Sidebar for basic calculations
+    st.sidebar.header("Basic Calculations")
+    num1 = st.sidebar.number_input("Enter the first number:", value=0.0, step=1.0)
+    num2 = st.sidebar.number_input("Enter the second number:", value=0.0, step=1.0)
+    operation = st.sidebar.selectbox("Choose an operation", 
+                                     ["Add", "Subtract", "Multiply", "Divide", "Power"])
+
+    if st.sidebar.button("Calculate"):
+        if operation == "Add":
+            result = add(num1, num2)
+        elif operation == "Subtract":
+            result = subtract(num1, num2)
+        elif operation == "Multiply":
+            result = multiply(num1, num2)
+        elif operation == "Divide":
+            result = divide(num1, num2)
+        elif operation == "Power":
+            result = power(num1, num2)
+        
+        st.sidebar.success(f"The result is: {result}")
+
+    # Main area for advanced functions and graphing
+    st.header("Advanced Functions")
+    func_choice = st.selectbox("Choose a function to graph", 
+                               ["Sin", "Cos", "Tan", "Square Root", "Logarithm"])
+    
+    x_min = st.number_input("Enter the minimum x value:", value=-10.0, step=1.0)
+    x_max = st.number_input("Enter the maximum x value:", value=10.0, step=1.0)
+
+    if st.button("Generate Graph"):
+        if func_choice == "Sin":
+            fig = plot_function(sin, [x_min, x_max])
+        elif func_choice == "Cos":
+            fig = plot_function(cos, [x_min, x_max])
+        elif func_choice == "Tan":
+            fig = plot_function(tan, [x_min, x_max])
+        elif func_choice == "Square Root":
+            fig = plot_function(square_root, [0, x_max])  # Adjust range for square root
+        elif func_choice == "Logarithm":
+            fig = plot_function(logarithm, [0.1, x_max])  # Adjust range for logarithm
+
+        st.plotly_chart(fig)
+
+    # Additional calculations
+    st.header("Additional Calculations")
+    extra_num = st.number_input("Enter a number for additional calculations:", value=1.0, step=1.0)
+    
+    col1, col2 = st.columns(2)
+    with col1:
+        if st.button("Calculate Square Root"):
+            result = square_root(extra_num)
+            st.write(f"Square root of {extra_num} is: {result}")
+    
+    with col2:
+        if st.button("Calculate Natural Logarithm"):
+            result = logarithm(extra_num, base=np.e)
+            st.write(f"Natural logarithm of {extra_num} is: {result}")
+
+# Run the calculator app
+if __name__ == '__main__':
+    calculator()