**is for imaginary, so, for example, the square root of -9 is (+9) x**

*i***. Actually Imaginary Numbers were once thought to be impossible, and so they were called "Imaginary", this was actually to make fun of them. But then people researched them more and discovered they were actually useful and important because they filled a gap in mathematics, but the "imaginary" name has stuck. And that is also how the name "Real Numbers" came about, real is the opposite of imaginary. There are uses for Imaginary numbers, such as**

*i*

*AC (Alternating Current) Electricity changes between positive and negative in a since wave.*

**But using imaginary numbers and real numbers together makes it a lot easier to do the calculations!**

If you combine two AC currents they may not match properly, and it can be

**very hard**to figure out the new current.
## No comments:

## Post a Comment