Question

What do we use imaginary numbers in a real world application?

Answer 1

I'm just thinking about graphs of functions and how some of them can approximately model what's going with something like the efficiency of an engine, but then imaginary numbers don't fit on that coordinate plane, I know you have the Complex plane, but what would you do with that?

Answer 2

electrical engineering

Answer 3

sorry hard to use my mouse to draw
basically the x axis is your real number line (ie what you are use to using)
the y axis is your complex number line and we label it as 1i, 2i, 3i