Initially imaginary, is the solution to the quadratic equation in contact. This concept is indeed a display that does not exist.
Many practical applications can be abstracted as a quadratic equation, the solution is the answer to real problems.
But that imaginary solution what is it?
The score is, at the time of calculation, sometimes used such as fractional pixel, fractional pixel does not exist, but they can solve the problem. This place used such as 0,4 pixels and useful to 0,7 pixels, the pixels with a more consistent performance will show some.
Our human world, will create a lot of abstract things in the physical world does not exist, they exist only in logic, but it can solve our problems.
Such as language, such as religion, such as money,
Mathematicians say the wide world than the common people, is good. But people wild times, and every step forward, we need very broad imagination and practice, coupled with natural selection.
People are hanging in the animal's sense of their own weaving online.