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# What is the difference between Complex numbers and Imaginary numbers?

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- JOHNLv 78 months ago
Imaginary numbers are a subset of complex numbers, z, namely, the subset for which Re(z) = 0; or in set notation {z| Re(z) = 0}. Much the same as the difference between negative integers and the integers, the former being a subset of the latter. So there is no essential difference between them.

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- billrussell42Lv 78 months ago
imaginary numbers are purely imaginary, such as 2i, 5i, –100i, πi

complex numbers have both an imaginary component and real component.

for example 2 + 2i, –8 – 11i

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