以「反演」的觀點看：
[math]\frac{1}{1-\omega}+\frac{1}{1-\omega^2}+\cdots+\frac{1}{1-\omega^{n-1}}[/math]
其中：[math]\omega[/math] 為 [math]x^n-1=0[/math] 的第一個虛根。
- Target Group (Age)
- 15 – 18
- Language
- Chinese Traditional / 繁體中文
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