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@@ -1,5 +1,9 @@
 # Errata
 
+## Chapter 1
+
+- pg 10: 5th row from the bottom, x^{(i)} \epsilon \mathbb{R}^{150 x 1}, should be x_{j} \epsilon \mathbb{R}^{150 x 1}. (Was correct in the 2nd edition.)
+
 ## Chapter 2
 
 - pg 42: It should be "eta=0.01" instead of "eta=0.1" in the sentence