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three cube roots of unity该如何理解?
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完整句子"Consider the complex polynomial z^3-1 ,whose zeros are the three cube roots of unity." 我知道要独立完成作业,所以没把完整题目搬上来问,先问一句。自己实在力不从心,只能慢慢摸索理解题意。 我理解这句貌似跟方程的一个实根两个虚根有关,但是实在不理解怎么就unity了。。 背景:数值计算numerical mathematics作业,非留学生,英语渣。。。
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