題組內容
6. (6%) Determine whether the sequence converges or diverges. If it converges, find the limit.
(a) \( (3\%) \) \( a_{n} = \frac{(-1)^{n}}{2\sqrt{n}} \)
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6. (6%) Determine whether the sequence converges or diverges. If it converges, find the limit.
(a) \( (3\%) \) \( a_{n} = \frac{(-1)^{n}}{2\sqrt{n}} \)