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
