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questionedithistorytranslations
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flag English language

What is imaginary numbers?
a negative numbers
a numbers which, after multiplying, give a negative result
a numbers that, when squared, has a negative result
all numbers which are not rational numbers
Essentially, an imaginary number is the square root of a negative number and does not have a tangible value. While it is not a real number — that is, it cannot be quantified on the number line - imaginary numbers are "real" in the sense that they exist and are used in math. Imaginary numbers are particularly applicable in electronics.
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wikipedia → Imaginary number
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flag Polish language

Co to jest liczba urojona?
Liczba ujemna
Liczba, która po pomnożeniu daje wynik ujemny
liczba zespolona, która podniesiona do kwadratu daje wynik ujemny
wszystkie liczby, które nie są liczbami wymiernymi
Liczbami urojonymi zajmowali się wielcy matematycy tacy jak Hamilton czy Euler. Jest to ciekawy przykład pojęcia o fundamentalnym znaczeniu dla techniki (m.in. elektrotechniki), które znalazło swoje główne zastosowanie po kilkuset latach od odkrycia.
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www.flickr.com
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