[級數]級數的斂散性
1.
已知Σa (x^k)於x=3處收斂,請問Σa[(-3)^k]為收斂或發散?(或無法判斷)
k k
2.
已知Σa(x+2)^k在x=4處收斂,請問在哪個區間內此級數亦收斂?
k
煩請高手解惑...可以的話稍微解釋一下答案..本人級數的部分有點弱...
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推
03/16 22:47, , 1F
03/16 22:47, 1F
推
03/16 23:10, , 2F
03/16 23:10, 2F
推
03/17 12:07, , 3F
03/17 12:07, 3F
→
03/17 12:08, , 4F
03/17 12:08, 4F
→
03/18 00:13, , 5F
03/18 00:13, 5F
→
03/18 00:14, , 6F
03/18 00:14, 6F
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