Waves and mathematical physics
Complex number
A number with real and imaginary components, where the imaginary unit satisfies i²=−1.
Common notation z=a+bi
In one sentence
What does Complex number mean?
A number with real and imaginary components, where the imaginary unit satisfies i²=−1.
How it is written
z=a+bi
A compact example
(2+3i)+(4−i)=6+2i.
Other names and search terms
imaginary number.
Clear answers
Questions about Complex number
What does Complex number mean in mathematics?
A number with real and imaginary components, where the imaginary unit satisfies i²=−1.
How is Complex number written?
A common notation is z=a+bi.
What is an example of Complex number?
(2+3i)+(4−i)=6+2i.