Concept

Complex Numbers

The set of complex numbers, represented by the symbol C,\mathbb{C}, is formed by all numbers that can be written in the form z=a+bi,z=a+bi, where aa and bb are real numbers, and ii is the imaginary unit. Here, aa is called the real part and bb is called the imaginary part of the complex number.

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If a=0,a=0, the number is an imaginary number. Conversely, if b=0,b=0, the number is real. Both real numbers and imaginary numbers are subsets of the complex number set.

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