“imaginary number”的概念、定义、翻译、参考文献-科学参考

　

单词	imaginary number
释义	imaginary number Physics A number that is a multiple of √−1, which is denoted by i; for example √−3=i√3. See also complex number. Mathematics A synonym for pure imaginary. Science and Technology A number that is the square root of a negative number, most commonly $\sqrt{- 1}$ designated i, for ‘imaginary’; i² = –1. In this notation $\sqrt{- 81}$ = 9i. The natural logarithm (ln) of i: ln i = i π‎/2. The number is imaginary because any integer squared must yield a positive integer. Mike Allaby Chemical Engineering The part of a complex number that is a multiple of √−1, which is denoted as j. For example, $\sqrt{- 5} = j \sqrt{5}$ . Electronics and Electrical Engineering A number whose square is a negative real number. Imaginary numbers are written as the product of a real number coefficient r and the unit imaginary number i, where i² = −1. This means that (ir)² = −(r²). See also complex number.
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