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Linear Algebra

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[1 1 -2 37 1-1 Let A= 0 1 1 1 Lo 0 0 1] [2 a. Is A in row-echelon form, reduced row-echelon form, neither or both? Explain yo

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@ Given A= I-2 37 Y- Given matrix A in row-echelon. from, But not in row-reduced echelon form. It reduced row-echelon form, tR, R, -R2=) lo-3 ali 101 e é ů, eo R2R2-R3 Sio-3 6-5) Rio R, -AR30i 10-2 Too 012 ► 20, -3303 = -5 xa+*3=-2 x4=2 x₂= a free va1-5 t + 3 1. Coco So we get loo = - 2 2C2 - x3 لا يع 1 0 m 2 x= x2 Le F-5 X- 22 1-2 tal - >C3 0 رو cu © we know that Ax=b, If

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