2016年 千葉大学前期入試 数学第9問
Synopsis
2016年 千葉大学 前期入試数学 第9問 z = cos 2π/7 + i sin 2π/7 (iは虚数単位)とおく。 (1) z + z^2 + z^3 + z^4 + z^5 + z^6 を求めよ ...
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