What is a complete number

The concept of complex number is the number space, including real numbers, which cannot be defined by real numbers when the square root of a negative number is taken. (-1) to be "i" of the number of the number

z = (a+bi)

A real b of the complex number written in the form of a virtual part is expressed. In the case of B = 0, Z = A The complex number defines a real number. In this case, real numbers are an element of the complex numbers set and the virtual part is equal to zero. Complex numbers define a plane, so that the XY plane for a complex number defined as z = x + is determined in the coordinate plane of the complex number.

Z = a + ib form of the complex number is defined as z = a - ib. According to this definition, it is defined as the length of the absolute value of a complex number, and this length, absolute value is calculated as the square root of the multiplication of the complex number.