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Picture enclosed.

(a) Prove that, if A is px p and nonsingular, then the row-echelon form of A I, is 1 A-1 (b) Use this to find the inverse of

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Le knao had PxP 91 ngular matnix, its an wenae ferndit eristSo se mon this mathad : Lan matni y uugmenked method we an transP2 iven 10 R2RR - 3 41 2 lo R3 R - 2 / - 3 2 R, 2 3 R2/3 2 RI R JR3R3-2R. 6 о f RIER,R C 43 R,-R R2 R2 3 /34 1 о11 So A -21 13 or 34 10

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Picture enclosed. (a) Prove that, if A is px p and nonsingular, then the row-echelon form...
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