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词汇 Cubic root
分类 英语词汇 英语翻译词典
释义

Cubic root

中文百科

立方根 Cube root

（重定向自Cubic root）
Plot of y = 3√x. The plot is symmetric with respect to origin, as it is an odd function. At x = 0 this graph has a vertical tangent.
The three cube roots of 1
Plot of the complex cube root together with its two additional leaves. The first picture shows the main branch which is described in the text

如果一个数x的立方等于a，那么这个数x就是a的立方根，其中x称为「被开方数」，而x可以是正数、0、负数或虚数。例如3的立方为27，那么这个数3就是27的一个立方根（在实数范围内）。若x是正实数，这个乘积相当于一个边长为x的立方体的体积。

英语百科

Cube root 立方根

（重定向自Cubic root）
Plot of y = 3√x. The plot is symmetric with respect to origin, as it is an odd function. At x = 0 this graph has a vertical tangent.
The three cube roots of 1
Plot of the complex cube root together with its two additional leaves. The first picture shows the main branch which is described in the text
Riemann surface of the cube root. One can see how all three leaves fit together

In mathematics, a cube root of a number x is a number a such that a = x. All real numbers (except zero) have exactly one real cube root and a pair of complex conjugate cube roots, and all nonzero complex numbers have three distinct complex cube roots. For example, the real cube root of 8, denoted √8, is 2, because 2 = 8, while the other cube roots of 8 are −1 + √3i and −1 − √3i. The three cube roots of −27i are

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