17 級數
的收斂半徑(radius of convergence)為何?
(A) 1
(B) 2
(C) 3
(D)∞
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統計: A(0), B(0), C(1), D(0), E(0) #1044896
統計: A(0), B(0), C(1), D(0), E(0) #1044896