The square root of −1 is called what?

Q: The square root of −1 is called what?

i — the imaginary unit.. Invented in the 1500s to solve cubic equations. Now essential to electrical engineering, quantum physics, and signal processing. Not so imaginary after all.

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Accepted Answer

i — the imaginary unit. — Invented in the 1500s to solve cubic equations. Now essential to electrical engineering, quantum physics, and signal processing. Not so imaginary after all.