Prove that {x_n} converges. Need to use info in a) and b)

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A: True. I have proved using definition of cauchy and convergent sequence.

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Q: A and the set B = {x, y}, then A X B is denumerable as well.

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Q: Suppose {a,} is monotonic. Prove that {an} converges if and only if {a} converges

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Q: EXERCICE 7. Let be the recurrent positive sequence (an)? = 1+ 3an-1 ao = 0 avec

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