有些数学问题,或条件是动态的,或结论是动态的,或条件与结论都是动态的,学生使用起来感到很不适应,但只要抓住动态中的静态因素,做到动态问题静态把握,问题的解决自然会轻松许多.例1动圆x~2+y~2-2mx-4my+6m-2=0(m∈R)恒过一个定点,试确定这个定点的坐标.分析:正是由于m∈R,使得圆x~2+y~2-2mx- Some math problems, or conditions are dynamic, or the conclusion is dynamic, or the conditions and conclusions are dynamic, students feel very uncomfortable to use, but as long as the dynamic to seize the static factors, to achieve a static grasp of dynamic issues, The solution of the problem will naturally be much easier.Example 1 Margin x ~ 2 + y ~ 2-2mx-4my + 6m-2 = 0 (m∈R) Constant over a fixed point, try to determine the coordinates of this fixed point. Due to m∈R, the circles x ~ 2 + y ~ 2-2mx-