知识要点］本章主要内容有复数的概念；复数的三角形式；代数形式与三角形式的互化；复数的代数运算及三角运算；复数的模、辐角及复数的加、减、乘、除和开方的几何意义；复数集中的一元二次方程和二项方程．其重点要求准确掌握和应用概念，正确地进行代数式和三角式的运... Knowledge points] The main contents of this chapter are the concept of complex numbers; the triangular form of plural numbers; the algebraic form and the interrelation of the triangular forms; the complex algebraic operations and trigonometric operations; the addition, subtraction, multiplication and division of complex numbers, radiuses and complex numbers The geometric meaning of the square root; the complex concentration of the quadratic equation and two equations. The key requirements of accurate grasp and application of concepts, the correct algebraic and triangular operation ...