prove or disprove that there is a rational number x and an irrational number y such that x y is irrational

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s: (a) (5 marks) (A + B) T = AT + BT . (b) (5 marks) (AB) T = BT AT . (c) (5 marks) AT A is symmetric. (d) (5 marks) AT A = AAT .

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1.AU MAT 120 Systems of Linear Equations and Inequalities Discussion

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