[NorthMountain]

SQRT(-1) is “j” in electrical engineering because “i” means something else entirely. It means the same thing in physics, but physicists manage to handle the ambiguity.

[InterceptPoint]

SQRT(-1) is “j” in electrical engineering because “i” means something else entirely. It means the same thing in physics, but physicists manage to handle the ambiguity.
+++++
Well I could beg off on a $money is closer to math than engineering argument. But I won’t.

You are absolutely right. The Square Root of Minus 1 is in universal use in the engineering work, at least electrical engineering.

But I should be forgiven since in my third grade complex algebra class we always used i. It’s hard to break old habits. 😎😎😎😎