利用特殊位置巧解一类解几填充题,可一望而解: 1.已知圆(x+4)~2+(y-3)~2=4和直线y=mx交于P、Q两点,则|OP|·|OQ|=_______。 2.M是椭圆x~2/9+y~2/4=1上任一点,F_1、F_2是它的焦点,Q是△MF_1F_2的内心,MQ延长线交直线F_1F_2于N,则|MQ|:|NQ|=_______。 3.将曲线y=f(x)平移,使曲线上点P的坐标由(1,0)变为(2,2),则此时的曲线方程是_____。 4.已知抛物线y~2=4x的一条焦点弦被焦 Using a special position to solve a solution of several types of puzzles, you can expect to solve: 1. Known circle (x+4)~2+(y-3)~2=4 and straight line y=mx intersects P and Q. Points, then |OP|·|OQ|=_______. 2.M is any point on the ellipse x~2/9+y~2/4=1, F_1, F_2 is its focus, Q is the center of ΔMF_1F_2, MQ extension line intersects F_1F_2 with N, then |MQ|: |NQ|=_______. 3. Translate the curve y=f(x) so that the coordinate of the point P on the curve changes from (1,0) to (2,2), then the curve equation at this time is _____. 4. It is known that a focal line of the parabola y~2=4x is focused