In Exercises 20 and 21 solve the systems using the method of LU decomposition. X1 + X2 -
Chapter 7, Problem 20(choose chapter or problem)
In Exercises 20 and 21 solve the systems using the method of LU decomposition. X1 + X2 - X3 + 2X4 = 7x1 + 3x2 + 2x3 + 2x4 = 6-x1 - 3x2 - 4x3 + 6x4 = 124x2 + 7x3 - 2x4 = -7
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