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It's sometimes used in physics and engineering. For instance, electrical engineering uses imaginary units in circuit analysis. TAlthough otherwise it's not really generally useful in evermost day-to-day lsifetuations.

"@WM-R":/1319092#comment_5701394
It's sometimes used in physics and engineering. For instance, electrical engineering uses imaginary units in circuit analysis. Tho it's not really generally useful in everyday life.