6905道相关试题

(2013·天津)函数http://static.haoxue.com/tk/import/20150827185812/image446.png的零点个数为( ).",

A.1

B.2

C.3

D.4

经曲·福建高考题函数http://static.haoxue.com/tk/import/20150827185812/image046.png的零点个数为( ).",

A.0

B.1

C.2

D.3

(1)[天津卷]已知双曲线http://static.haoxue.com/tk/import/20150828182747/image025.gif的一条渐近线平行于直线http://static.haoxue.com/tk/import/20150828182747/image026.gif,双曲线的一个焦点在直线http://static.haoxue.com/tk/import/20150828182747/image005.gif上,则双曲线的方程为 ( )",

A.http://static.vko.cn/content/tk/import/20150828182747/image027.gif

B.http://static.vko.cn/content/tk/import/20150828182747/image028.gif

C.http://static.vko.cn/content/tk/import/20150828182747/image029.gif

D.http://static.vko.cn/content/tk/import/20150828182747/image030.gif

已知点P是抛物线http://static.haoxue.com/tk/import/20150830182441/image023.gif上的动点,点P在y轴上的射影是M,点A 的坐标是http://static.haoxue.com/tk/import/20150830182441/image050.gif,则当|http://static.haoxue.com/tk/import/20150830182441/image051.gif时,http://static.haoxue.com/tk/import/20150830182441/image052.gif的最小值是(  )",

A.http://static.vko.cn/content/tk/import/20150830182441/image053.gif

B.http://static.vko.cn/content/tk/import/20150830182441/image054.gif

C.http://static.vko.cn/content/tk/import/20150830182441/image055.gif

D.http://static.vko.cn/content/tk/import/20150830182441/image056.gif

抛物线的准线l的方程是http://static.haoxue.com/tk/import/20150830182441/image037.gif,且抛物线恒过点http://static.haoxue.com/tk/import/20150830182441/image173.gif,则抛物线焦点弦PQ的另一个端点Q的轨迹方程是(  )",

A.http://static.vko.cn/content/tk/import/20150830182441/image174.gif

B.http://static.vko.cn/content/tk/import/20150830182441/image175.gif

C.http://static.vko.cn/content/tk/import/20150830182441/image176.gif

D.http://static.vko.cn/content/tk/import/20150830182441/image177.gif

过抛物线http://static.haoxue.com/tk/import/20150830182441/image093.gif的焦点F的直线l交抛物线于A,B,交其准线于点C,若http://static.haoxue.com/tk/import/20150830182441/image364.gifhttp://static.haoxue.com/tk/import/20150830182441/image365.gif,则抛物线的方程为(  )",

A.http://static.vko.cn/content/tk/import/20150830182441/image252.gif

B.http://static.vko.cn/content/tk/import/20150830182441/image366.gif

C.http://static.vko.cn/content/tk/import/20150830182441/image253.gif

D.http://static.vko.cn/content/tk/import/20150830182441/image246.gif

过点http://static.haoxue.com/tk/import/20150830182441/image511.gif的直线与抛物线http://static.haoxue.com/tk/import/20150830182441/image302.gif相交于A,B两点,若点N是点C关于坐标原点的对称点,则http://static.haoxue.com/tk/import/20150830182441/image512.gif面积的最小值为(  )",

A.http://static.vko.cn/content/tk/import/20150830182441/image513.gif

B.http://static.vko.cn/content/tk/import/20150830182441/image514.gif

C.http://static.vko.cn/content/tk/import/20150830182441/image515.gif

D.http://static.vko.cn/content/tk/import/20150830182441/image516.gif

设F为抛物线http://static.haoxue.com/tk/import/20150830221031/image424.gif的焦点,过F且倾斜角为30°的直线交C于A,B两点,O为坐标原点,则http://static.haoxue.com/tk/import/20150830221031/image425.gif的面积为(  )",

A.http://static.vko.cn/content/tk/import/20150830221031/image426.gif

B.http://static.vko.cn/content/tk/import/20150830221031/image427.gif

C.http://static.vko.cn/content/tk/import/20150830221031/image428.gif

D.http://static.vko.cn/content/tk/import/20150830221031/image429.gif

设A,B为抛物线http://static.haoxue.com/tk/import/20150830221029/image093.gif上不同的两点,O为坐标原点,且http://static.haoxue.com/tk/import/20150830221029/image094.gif,则http://static.haoxue.com/tk/import/20150830221029/image095.gif面积的最小值为(  )",

A.http://static.vko.cn/content/tk/import/20150830221029/image096.gif

B.http://static.vko.cn/content/tk/import/20150830221029/image097.gif

C.http://static.vko.cn/content/tk/import/20150830221029/image098.gif

D.http://static.vko.cn/content/tk/import/20150830221029/image099.gif

设点http://static.haoxue.com/tk/import/20150830221029/image393.gif是抛物线http://static.haoxue.com/tk/import/20150830221029/image093.gif准线上一点,过该抛物线焦点F的直线与它交于A、B两点,若http://static.haoxue.com/tk/import/20150830221029/image394.gif,则http://static.haoxue.com/tk/import/20150830221029/image395.gif的面积为(  )",

A.http://static.vko.cn/content/tk/import/20150830221029/image396.gif

B.http://static.vko.cn/content/tk/import/20150830221029/image397.gif

C.http://static.vko.cn/content/tk/import/20150830221029/image398.gif

D.http://static.vko.cn/content/tk/import/20150830221029/image399.gif