+118654 i can just be a pronumeral like any other but it can also mean
$$i=\sqrt{-1}$$
Noe this has no real solutions - you cannot find the square root of a negative number but there are other numbers called imaginary or complex numbers. i is the basis of that number system. 
+118654 i can just be a pronumeral like any other but it can also mean
$$i=\sqrt{-1}$$
Noe this has no real solutions - you cannot find the square root of a negative number but there are other numbers called imaginary or complex numbers. i is the basis of that number system.
