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  1. B

    HELP on these Challenging Questions

    Hello, I will have an exam soon, can anyone please help me on these questions ? 1.Let Xn=1/(n+1) +1/(n+2) +...+ 1/(2n) Find the limit of this as n approaches infinity 2.Evaluate the sum of the series ∞ E 1/(k(k+1)(k+2)) k=1 3. For which z that is an element of C...
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