The difference between imaginary number and real number

The difference between imaginary number and real number

(1) Unreachable figure: false number (2): imaginary number when a + bi, B is not equal to zero in complex number (3): Chinese words that do not indicate a specific number in mathematics, if the square of a certain number is negative, That number is an imaginary number. All imaginary numbers and real numbers form a complex number. This number has a special symbol "I" (imaginary). We can write positive imaginary number as (+ I), negative imaginary number as (- I), and + 1 as a positive real number, Let (- 1) be regarded as a negative real number. Therefore, we can say √ ￣ (- 1) = ± I. We can even draw the imaginary number system in drawing. If you use a straight line with 0 point as the midpoint to represent a positive real number system, then the positive real number is on one side of 0 point, and the negative real number is on the other side of 0 point, When you make a straight line intersecting the straight line at right angles through 0, you can express the imaginary number system along the second straight line. On the second straight line, the number on one side of 0 is a positive imaginary number, and the number on the other side of 0 is a negative imaginary number, Later, it was found that the imaginary number can correspond to the vertical axis of the plane, which is as true as the real number corresponding to the horizontal axis of the plane. The plane formed by the imaginary number axis and the real number axis is called the complex plane, and each point on the complex plane corresponds to a complex number, But there are two-dimensional positive and negative; integers should be accurately divided into real integers and virtual integers