Question: The sequence (xn) is defined by the following formulas for the nth term. Write the first five terms in each case: (a) xn := 1

The sequence (xn) is defined by the following formulas for the nth term. Write the first five terms in each case:
(a) xn := 1 + (∙1)n,
(b) xn := (-1)n/n;
(c) xn := 1/n(n + 1),
(d) x := 1/n2 + 2.

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