diff --git a/extras/readings.md b/extras/readings.md
index 518a2f0..52d8ebd 100644
--- a/extras/readings.md
+++ b/extras/readings.md
@@ -39,6 +39,7 @@ Name | Author(s)
 [Grinstead and Snell’s Introduction to Probability](https://math.dartmouth.edu/~prob/prob/prob.pdf) | Charles M. Grinstead, J. Laurie Snell
 [Linear Algebra for Everyone](https://math.mit.edu/~gs/everyone/) | Gilbert Strang
 [The Art of Linear Algebra](https://github.com/kenjihiranabe/The-Art-of-Linear-Algebra) | Kenji Hiranabe, Gilbert Strang
+[The Math Behind Artificial Intelligence](https://www.freecodecamp.org/news/the-math-behind-artificial-intelligence-book) | Tiago Monteiro
 
 ## Systems