Year: 2013
数学文化, Vol. 4 (2013), Iss. 3 : pp. 66–69
Abstract
有人在问答网站Stack Exchange提问：我一直觉得虚数（imaginary number）很难懂。中学老师说，虚数就是-1的平方根。
$$i = \sqrt{-1}$$
可是，什么数的平方等于-1呢？对-1求平方根，计算器直接显示出错！
谁能解释，虚数到底是什么？它有什么用？
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Journal Article Details
Publisher Name: Global Science Press
Language: Multiple languages
DOI: https://doi.org/2013-MC-11661
数学文化, Vol. 4 (2013), Iss. 3 : pp. 66–69
Published online: 2013-01
AMS Subject Headings:
Copyright: COPYRIGHT: © Global Science Press
Pages: 4