1 . 在直角坐标系
中,圆
的参数方程为
(
为参数).以坐标原点为极点,
轴的正半轴为极轴建立极坐标系,直线
的极坐标方程为
.
(1)求圆
的普通方程和直线
的直角坐标方程;
(2)若直线
与圆
相交于
两点,点
的直角坐标为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44ed808f35f10405691094f07556718c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c2c8a0551f4f8686e887fa52c86a8f0.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7a999c36de5c9a9ce876a4a56fa34c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/559d66fd8b309fd440ce9bda78a579c9.png)
您最近一年使用:0次
2024-07-20更新
|
24次组卷
|
2卷引用:青海海西格尔木三校2024届高三第三次联考文科数学试题
解题方法
2 . 已知A、B分别是椭圆
的右顶点和上顶点,动点C在该椭圆上运动,求
的重心G的轨迹参数方程,并说明它是什么图形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a7315208b83923a2bddaae013f7a6e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
解题方法
3 . 已知某条曲线的参数方程为
(其中a是参数),则该曲线是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c270e4d9a6a66ba6ffbdb678a2158da.png)
A.线段 | B.圆 | C.圆的一部分 | D.双曲线 |
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解题方法
4 . 在平面直角坐标系xOy中,若直线l:
(t为参数)过椭圆C:
(φ为参数)的右顶点,则常数a的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c82294860d718d59e07d8a84bb95bed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b86d2d4d4013d93eb5c13ff93258e36.png)
A.1 | B.2 | C.3 | D.4 |
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5 . 极坐标系中,点A的极坐标是
,则
(1)点A关于极轴的对称点的极坐标是______ ;
(2)点A关于极点的对称点的极坐标是______ ;
(3)点A关于过极点且垂直于极轴的直线的对称点的极坐标是______ .
[本题中规定
,
]
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa24bfff95c6e6f329837cd589143ab3.png)
(1)点A关于极轴的对称点的极坐标是
(2)点A关于极点的对称点的极坐标是
(3)点A关于过极点且垂直于极轴的直线的对称点的极坐标是
[本题中规定
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7026315511e1afd55a97b5278b0dd2cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d0ca9a39621967d7ba5629ea9b12d78.png)
您最近一年使用:0次
6 . 如图,在极坐标系Ox中,
,
,弧
和弧
所在圆的圆心分别是
,
,曲线
是弧
,曲线
是弧
.
,
的极坐标方程;
(2)已知点P是曲线
,
上的动点,直线l:
,C、D是直线l上的两点,且
,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8859a4314097bf1ef32d6c9d945dad95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03f804a7705b2eba200ceb2743a619d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf5beab008836996b5183f4575304fbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15481bffd1ee35f89db2a0602388c701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b82133e39fdd29e7d6fd894f13de0f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f47c8b6fe0f0736597316f41928dfeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf5beab008836996b5183f4575304fbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15481bffd1ee35f89db2a0602388c701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)已知点P是曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc8a3447c0deeb530561a15a9893849.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b649eb6d189e624fc45ff8a6ae1b38d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177678001b2ccde1db8f57fa5e017002.png)
您最近一年使用:0次
解题方法
7 . 设飞机以匀速
m/s做水平飞行,若在飞行高
m处投弹(设炸弹的初速度等于飞机的速度).
(1)求炸弹离开飞机后的轨迹方程;
(2)试问飞机在离目标多远(水平距离)处投弹才能命中目标.(结果保留整数)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61dd5e2af00ce84216765d637fb136a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fa0fcf03d66554d3285421d6ca0beb2.png)
(1)求炸弹离开飞机后的轨迹方程;
(2)试问飞机在离目标多远(水平距离)处投弹才能命中目标.(结果保留整数)
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8 . 已知直线
,曲线
,以坐标原点为极点,
轴的正半轴为极轴建立极坐标系,曲线
的极坐标方程为
.若曲线
分别交直线
和曲线
于点
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dac1708ccb41bac7e8555db896ce4bed.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0e59480219e0af960aa6f68491813c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a45f744ee7f9bc2a3f36e9b042aa2cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1656178bb8d085a5cbeda8e90cf4e86e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dac1708ccb41bac7e8555db896ce4bed.png)
您最近一年使用:0次
9 . 极坐标系中,圆
的圆心的坐标是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68cdaef00ef40c0e3b5caa50a2c5621f.png)
您最近一年使用:0次
解题方法
10 . 在极坐标系中,O为极点,已知两点M、N的极坐标分别为
、
.
(1)求两点M、N的距离;
(2)求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02c63523ce5abeb26c09baa28169f7c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f7860272b0c201a4d9d435769a2f38f.png)
(1)求两点M、N的距离;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f02028a3847c4807c2d3cf0ea7efb8.png)
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