/exercises/mlclass-ex1/computeCostMulti.m

 1function J = computeCostMulti(X, y, theta)
 2%COMPUTECOSTMULTI Compute cost for linear regression with multiple variables
 3%   J = COMPUTECOSTMULTI(X, y, theta) computes the cost of using theta as the
 4%   parameter for linear regression to fit the data points in X and y
 5
 6% Initialize some useful values
 7m = length(y); % number of training examples
 8
 9% You need to return the following variables correctly 
10J = sum(((X*theta)-y).^2)/(2*m);
11
12% ====================== YOUR CODE HERE ======================
13% Instructions: Compute the cost of a particular choice of theta
14%               You should set J to the cost.
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20% =========================================================================
21
22end