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წარმოსახვითი რიცხვები. შესავალი

სალი წარმოგვიდგენს წარმოსახვით ერთეულს, რომელიც განისაზღვრება განტოლებით i^2=-1. შემდეგ ის განიხილავს ამ განსაკუთრებული რიცხვის ხარისხებს. შემქმნელია სალ ხანი.

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