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1. (Sections 3.1I and 3.2) Use the method of triangular systems to solve the system of linear equations Ar b, where b = (-2,

1. (Sections 3.1I and 3.2) Use the method of triangular systems to solve the system of linear equations Ar b, where b = (-2, 3)" and A %3D A1 A2 A3, with 1 3 4 A, = -1 A = Az = 0 2 -6 1

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