Complex does not mean complicated. A complex number is a combination of a real number and an imaginary number. Real numbers are basically any number you can think of and imaginary numbers when squared give you a negative result.

Ex) Add 3+5i and 4-3i

(3 + 5**i**) + (4 − 3**i**)

= 3 + 4 + (5 − 3)**i**

= 7 + 2**i**

An electromagnetic field, for example, requires imaginary numbers to measure because the strength of the field is determined by both electrical and magnetic components that must be combined into a single complex imaginary number to get an accurate measurement. Is my example helpful?

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Tags: Imagine, numbers, precalc, week4-D

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