一、明确复数的相关概念,从概念入手把复数实数化我们知道复数的一般形式为x=a+bi(a,b∈R),则复数x=a+bi(a,b∈R)为实数的充要条件是:a有意义,且b=0.应当特别提醒的是许多同学在复数问题实数化时,只顾令虚部为零,而不管实部是否有意义,这样就会造成错解.例1实数a分别取什么值时,复 First, clear the concept of complex numbers, starting from the concept of the real number of complex numbers We know that the general form of the complex for the x = a + bi (a, b ∈ R), then the complex number x = a + bi The necessary and sufficient conditions for real numbers are: a makes sense, and b = 0. It should be specially reminded that many students will only make the imaginary part zero when the real numbers of the plural problems are real, regardless of whether the real part is meaningful or not, Solution. Example 1 real a what value, complex