what the difference betweenComplex number and Complex variable?

Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
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what the difference betweenComplex number and Complex variable?

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complex number
  • Any number which can be converted or written in the form x+iy, is a complex number. Here x,y are real numbers and i (also called iota) is equal to ' square root of -1'
  • here x is called the real part of complex number and y is called the imaginary part of complex number.
  • Note*: The complex number of the form x+iy, is basically called the cartesian form of complex number.. Each form of complex number can be easily converted into any other form.
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