Prove that if ACB, then A-B=0.

Q: 3 Let x = (9, −9, −4) and y = (-6, 6, -9) be in R³ and a be in R. Then ax + y = ( ,23).

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Q: Compute AB, where A AT B = = 24 09 4 -3 -1 and B = 76 (1 %). 6 4

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Q: Prave that toc all numbers a and b, if (a,b)=d and az df, b=dq+ then df, 6=dg, then.

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Q: Suppose x,y and z are positive real numbers. Prove that x+z/y+z>xy if and only if x<y.

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Q: 1. Solve the equations below. Show your work. a.) x2 – 14x + 45 = 0 b.) 3x2 – 2x - 5 = 0

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Q: Let 1 3 A = -2 -1 and В - 2 -2. a. Find AT and show that (A")' = A. b. Show that (A+B)" = AT + B".…

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