Yes, the classic way to show an "imaginary number" is to use an i (or sometimes a j).

So, 4i is 4 times the square root of -1

And a "Complex Number" is one that includes "Real" and "Imaginary" numbers. So, for example **2 + 3i** is a complex number.

What is the square root of -1?

1i

]]>important thing here...not

real

Yes, that is what is so interesting. Maths goes beyond what **we** think is real, and shows us a reality far exceeding our normal experience. Every so often this new reality shows us a new thing about our normal life.

"Math Error"

But, "imaginary numbers" are defined as 'J'

or even 'i'

]]>But, "imaginary numbers" are defined as 'J'

]]>An electrical engineer was able to use "imaginary numbers" to prove that a seemingly normal circuit would in fact blow up. Noone believed him because it wasn't *real*. They connected up the circuit, and *foop*. THEN they believed him. Maths had seen outside the normal experience.

(An "imaginary numbers" is based on the square root of -1. What is the square root of -1?)

]]>Yes, things can be impossible in maths when we set limits, such as how do you make 3 using 1 and 1.

But on the other hand, maths can reach outside our universe by happily dealing with multiple dimensions, infinite speed and things like that.

]]>I tried dozens of combinations and none of them work ... it may be impossible to do following those instructions!

Nothing is really impossible in life but in maths that is the hard thing about their is only one answer and quite a lot of things are impossible in MATHS!!!!!!!!!!!

]]>I hope random_blonde can tell us what her teacher reckons the answer is.

Probably involves standing a 6 on its head

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