Mastering Programming with MATLAB: (7)Linear Equations in MATLAB
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Prof Michael Fitzpatrick explains the MATLAB Backslash operator(\).
Backslash operator(\):
x = A\B solves the system of linear equations A*x = B. The matrices A and B must have the same number of rows. MATLAB® displays a warning message if A is badly scaled or nearly singular, but performs the calculation regardless.
If A is a scalar, then A\B is equivalent to A.\B.
If A is a square n-by-n matrix and B is a matrix with n rows, then x = A\B is a solution to the equation A*x = B, if it exists.
If A is a rectangular m-by-n matrix with m ~= n, and B is a matrix with m rows, then A\B returns a least-squares solution to the system of equations A*x= B.