U+0606 Arabic-Indic Cube Root

Die Wikipedia hat die folgende Information zu diesem Codepunkt:

In mathematics, a cube root of a number x is a number y such that y³ = x. All nonzero real numbers 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 $\sqrt[3]{8}$, is 2, because 2³ = 8, while the other cube roots of 8 are $-1+i\sqrt{3}$ and $-1-i\sqrt{3}$. The three cube roots of −27i are:

$3i,\frac{3\sqrt{3}}{2}-\frac{3}{2}i,\text{and}-\frac{3\sqrt{3}}{2}-\frac{3}{2}i.$

In some contexts, particularly when the number whose cube root is to be taken is a real number, one of the cube roots (in this particular case the real one) is referred to as the principal cube root, denoted with the radical sign $\sqrt[3]{{}^{}}.$ The cube root is the inverse function of the cube function if considering only real numbers, but not if considering also complex numbers: although one has always ${\left(\sqrt[3]{x}\right)}^3=x,$ the cube of a nonzero number has more than one complex cube root and its principal cube root may not be the number that was cubed. For example, $(-1+i\sqrt{3}{)}^3=8$, but $\sqrt[3]{8}=2.$