Re: [中學] 請教兩題北模考題

[Huawen (開心就好~)]

1.

Z(1) = 1
Z(2) = (i^1) * Z(1) + 1 = 1 + i
Z(3) = (i^2) * Z(2) + 1 = -i
Z(4) = (i^3) * Z(3) + 1 = 0
Z(5) = (i^4) * Z(4) + 1 = 1
  .    開
  .    始
  .    循
  .    環
Z(20) = (i^20) * Z(20) + 1 = Z(4) = 0

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