Update src/streamlit_app.py

src/streamlit_app.py

@@ -17,6 +17,23 @@ with tabs[0]:
 
     future_value = a * ((1 + r) ** T)
     st.write(f"Future Value = {a} * (1 + {r})^{T} = **{future_value:,.2f}**")
+    st.write(f"Future Value = {a} * (1 + {r})^{T} = **{future_value:,.2f}**")
+
+    # LaTeX formula note
+    st.markdown(
+        r"""
+        **Note:** The formula used is:
+        \[
+        FV = a \cdot (1 + r)^T
+        \]
+        where:
+        - \(FV\) = future value  
+        - \(a\) = initial amount  
+        - \(r\) = annual return rate  
+        - \(T\) = number of years
+        """,
+        unsafe_allow_html=True
+    )
 
 # --- Consistent Cash Flow Investment ---
 with tabs[1]:
@@ -32,6 +49,22 @@ with tabs[1]:
 
     st.write(f"Future Value of Cash Flows = **{fv_cf:,.2f}**")
 
+    # LaTeX formula note
+    st.markdown(
+        r"""
+        **Note:** The formula used is:
+        \[
+        FV = a \cdot \left( \frac{(1 + r)^T - 1}{r} \right)
+        \]
+        where:
+        - \(FV\) = future value of the cash flow stream  
+        - \(a\) = annual cash flow  
+        - \(r\) = annual return rate  
+        - \(T\) = number of years
+        """,
+        unsafe_allow_html=True
+    )
+
 # --- Monte Carlo Simulation ---
 with tabs[2]:
     st.header("Monte Carlo Simulation")