imaginary number

释义与例句

n.

1.

A number of the form bi, where b is any real number and i denotes the imaginary unit.

虚数

纯虚数

数学
2.

A number of the form a + bi, where a and b are real numbers and b is nonzero.

数学

词汇关系

名词

同义词 2

imaginary complex number

上位词 1

number

下位词 4

real complex conjugate pure imaginary number real number

部分词 1

imaginary part

词源

The adjective imaginary in this context was first used (as French imaginaire) by René Descartes in 1673, La Geometrie, referring to imaginary numbers in the broad sense, as non-real roots of polynomials. Descartes' usage was derogatory, but the concept later gained acceptance through the work of Leonhard Euler and Carl Friedrich Gauss in the 18th century.

来源：wiktionary

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