[微積] 請問一題問如何求發散
題目是
Is the series convergent or divergent? Give reasons for your answer.
n
∞ n
Σ----
n=1 n!
我是先分成
n.n.n......n n n n n n
Σ--------- =Σ-.-.-.-......-
1.2.3......n 1 2 3 4 n
接下我就解不出來了...
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11/07 00:38, , 1F
11/07 00:38, 1F
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11/07 00:46, , 2F
11/07 00:46, 2F
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