4.已知抛物线y=-(x-m)2的顶点为A,直线l:y=$\sqrt{3}$x-$\sqrt{3}$m,其中m>0
(1)求抛物线的对称轴及点A的坐标(用含m的代数式表示);
(2)证明:点A在直线l上.
0 282978 282986 282992 282996 283002 283004 283008 283014 283016 283022 283028 283032 283034 283038 283044 283046 283052 283056 283058 283062 283064 283068 283070 283072 283073 283074 283076 283077 283078 283080 283082 283086 283088 283092 283094 283098 283104 283106 283112 283116 283118 283122 283128 283134 283136 283142 283146 283148 283154 283158 283164 283172 366461
(1)求抛物线的对称轴及点A的坐标(用含m的代数式表示);
(2)证明:点A在直线l上.