Imaginary (Noun)
Meaning
(mathematics) a number of the form a+bi where a and b are real numbers and i is the square root of -1.
Classification
Nouns denoting quantities and units of measure.
Examples
- The complex number 3+4i is an imaginary number with a non-zero imaginary part.
- In mathematics, the term imaginary number was originally used to describe numbers that could not be expressed on the real number line.
- The square root of -1 is denoted by the symbol i and is the basis for all imaginary numbers.
- Imaginary numbers are used to extend the real number system to the complex number system.
- The conjugate of an imaginary number is obtained by changing the sign of the imaginary part.