diff --git a/ex1/gradientDescentMulti.m b/ex1/gradientDescentMulti.m
index c98315b..d95607b 100644
--- a/ex1/gradientDescentMulti.m
+++ b/ex1/gradientDescentMulti.m
@@ -17,7 +17,9 @@ for iter = 1:num_iters
     %       of the cost function (computeCostMulti) and gradient here.
     %
 
+    theta = theta - (alpha/m) * X' * (X*theta - y);
 
+    J = computeCostMulti(X, y, theta)
 
     % ============================================================