diff --git a/README.md b/README.md
index 8f35d54..82a61ad 100644
--- a/README.md
+++ b/README.md
@@ -41,6 +41,17 @@ Feel free to explore, contribute, and share your insights!
    
    $$\hat{f}(k) = \int_{-\infty}^{\infty} f(x) \, e^{-2\pi i k x} \, dx$$  
 
+   **Formula for Inverse Fourier Transform:**  
+   
+   $$f(x) = \int_{-\infty}^{\infty} \hat{f}(k) \, e^{2\pi i k x} \, dk$$  
+
+   Where:  
+   
+   - $f(x)$ is the original function in the spatial domain.  
+   - $\hat{f}(k)$ is the transformed function in the frequency domain.  
+   - $x$ represents position, and $k$ represents momentum or frequency.  
+
+