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1.确定范围例1m为何值时关于x的方程mx~2-x~2=3x-2有两个实根?分析方程有两个实根一定是一元二次方程,一元二次方程才有根的判别式,确定一元二次方程
1. Determine the range of 1m why the value of the equation for x mx ~ 2-x ~ 2 = 3x-2 has two real roots? Analysis of the equation has two roots must be a quadratic equation, quadratic equation only Root discriminant to determine the quadratic equation