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一条光线从点A(3,2)射出,与x轴相交于点B,经x轴反射,该反射光线l1与y轴相交于点C,经y轴再次反射,反射光线l2过点D(2,3). (1)求C的坐标. (2)求l1所在的直线方程.
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高二上学期数学《》真题及答案
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光线从点A﹣34发出经过x轴反射再经过y轴反射最后光线经过点B﹣26则经y轴反射的光线的方程为
2x+y﹣2=0
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一条光线从点P53射出与x轴相交于点Q20经x轴反射则反射光线所在直线的方程为
x+y-2=0
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x-y+2=0
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两圆的圆心都在x轴上且两圆相交于A.B.两点点A.的坐标是32那么点B.的坐标为_______.
一条光线从点﹣23射出经x轴反射后与圆x﹣32+y﹣22=1相切求反射光线所在直线的方程.
在平面直角坐标系中以点32为圆心3为半径的圆一定
与x轴相切,与y轴相切
与x轴相切,与y轴相
与x轴相交,与y轴相切
与x轴相交,与y轴相
已知圆C.与x轴相切于点T10与y轴正半轴交于两点
,B(B在A.的上方)且AB=2,过点A.任作一条直线与圆O:x
2
+y
2
=1相交于M.、N.两点,下列三个结论: ①; ②; ③2.其中正确结论的序号是( )A. ①②
②③
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一条直线从点A.32出发经过x轴反射通过点B.-16求入射光线与反射光线所在的直线方程
如图直线y=2x+3与x轴相交于点A.与y轴相交于点B.1求点A.B.的坐标2求当x=-2时y的值当
如图把平面内一条数轴x绕原点O逆时针旋转角θ0°
已知一条光线从点-23射出经y轴反射与圆x+32+y-22=1相切则反射光线所在的直线的斜率为.
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抛物线有如下光学性质过焦点的光线经抛物线反射后得到的光线平行于抛物线的对称轴反之平行于抛物线对称轴
一条光线从点P64射出与x轴相交于点20经x轴反射则反射光线所在直线方程是.
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如图直线y=3x+3与x轴交于点A.与y轴交于点B.过B.点作直线BP与x轴正半轴交于点P.取线段O
已知点
(﹣3,2)与点
(x,y)在同一条平行y轴的直线上,且B.点到x轴的矩离等于3,则B.点的坐标是( ) A. (﹣3,3)B. (3,﹣3)
(﹣3,3)或(﹣3,﹣3)
(﹣3,3)或(3,﹣3)
光线从A.-34点射出到x轴上的B.点后被x轴反射到y轴上的C.点又被y轴反射这时反射线恰好过点D.
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