What are imaginary numbers?? Why can’t the square root of a negative be real?
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Real and imaginary are just names someone gave to these numerical concepts long ago and it stuck. But they aren’t really “imaginary”. They just can’t be used to describe countable quantities of real things. You can’t have 4i grapes. They are a different class of numbers but in some branches of math they are just as “real” and useful as any other numbers.
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