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Complex Numbers

Numbers like 3 – 2i or that can be written as the sum or difference of a real number and an imaginary number. Complex numbers are indicated by the symbol .

Note: All real numbers and all pure imaginary numbers are complex. Sometimes, however, mathematicians use the phrase complex numbers to refer strictly to numbers which have both nonzero real parts and nonzero imaginary parts.

 

 

 

See also

Nonreal numbers, natural numbers, whole numbers, integers, rational numbers, algebraic numbers, Gaussian integers

 


  this page updated 21-feb-16
Mathwords: Terms and Formulas from Algebra I to Calculus
written, illustrated, and webmastered by Bruce Simmons
NCTM Web Bytes December 2004 Web Bytes March 2005 Web Bytes