imaginary unit

短语

虚数单位

词形变化

imaginary units 复数 imaginary units

释义与例句

n.
  1. 1.

    An imaginary number (in the case of complex numbers, usually denoted i) that is defined as a solution to the equation x²=-1.

    数学

    2014, Dennis G. Zill, Warren S. Wright, Advanced Engineering Mathematics, Ascend Learning (Jones & Bartlett Learning), 5th Edition, page 793, We now simply say that i is the imaginary unit and define it by the property i²=-1. Using the imaginary unit, we build a general complex number out of two real numbers.

词源

So named because it takes on the role of unit for the imaginary part of a complex number.

来源：wiktionary