Читать книгу Algebra I All-in-One For Dummies - Mary Jane Sterling, Mary Sterling Jane - Страница 21

Yes, there are imaginary numbers in mathematics. These numbers were actually created by mathematicians who didn’t like not finishing a problem! They would be trying to solve a quadratic equation and be stumped by the situation where they needed the square root of a negative number. There was no way to deal with this.

So some clever mathematicians came up with a solution. They declared that must be equal to i. Yes, the i stands for “imaginary.” You’ll see how this works in Chapter 16.