diff --git a/ex1/computeCost.m b/ex1/computeCost.m
index 4570dbb..170e3d1 100644
--- a/ex1/computeCost.m
+++ b/ex1/computeCost.m
@@ -19,7 +19,16 @@
 % Instructions: Compute the cost of a particular choice of theta
 %               You should set J to the cost.
 
+% ====================== YOUR CODE HERE ======================
+% Instructions: Compute the cost of a particular choice of theta
+%               You should set J to the cost.
+% sum = 0;
+% temp_cost = X * theta - y;
+% for i = 1:m
+%     sum = sum + temp_cost(i)^2;
+% end
 
+% J = (1/(2*m))*sum;