and also ELI16 what a an imaginary number is and how it works in real life
In: Mathematics
For a five year old – It’s literally a number you made up, taking a flergle and adding a flergle. Flergles do all kinds of weird things, but you don’t need to care what they are exactly, they are just weird numbers.
For a sixteen year old – Imaginary is like Pi. The value of i is root minus one, same way that the value of pi is circumference divided by diameter. Just pretend i is a fancy greek letter, and it doesn’t matter too much whether i as a concept makes sense.
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