1 . 如图,抛物线
与x轴相交于点
,点C,与y轴相交于点B,其对称轴为直线
.
(2)若点M在直线
上,且在第四象限,过点M作
轴于点N.
①若点N在线段
上,且
,求点M的坐标;
②以
为对角线作正方形
(点P在
右侧),当点P在抛物线上时,设点N的坐标为
,求t的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b286a72a818ccc52e63581841da08dd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2375a27ead9549550676d4e6a2b47243.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
(2)若点M在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52cbeb9b1c1d637b903cf3e5c7f730f6.png)
①若点N在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04e15f89591451d5074a9262a25817bc.png)
②以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96198405db093eb43952282a69332f92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7bbeb423d65ec9a49a00e9ae5ebd480.png)
您最近一年使用:0次
2 . 如图,直线
与经过原点的抛物线
相交于点
,
,与
轴、
轴分别相交于点
,
,抛物线与
轴另一个交点为
,点
的坐标为
,点
在第一象限内且到
轴、
轴的距离相等.
(2)在第四象限内,
是抛物线上一动点.当以点
为圆心,以
为半径的圆与直线
相切于点
时,求点
的坐标;
(3)在第一象限内,抛物线的对称轴上是否存在一点
,使
的内心也在抛物线的对称轴上?若存在,求出点
的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2d8041c797b98b834c70dbf7d1d4346.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c82021e3b713f7564729c29f05fe7bab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(2)在第四象限内,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/735056c174e8dd7906257a2a50a962a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
(3)在第一象限内,抛物线的对称轴上是否存在一点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b3b785ebbf5889849e872f461669f71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
您最近一年使用:0次
3 . 如图,二次函数的图象与x轴交于
,
两点,与y轴交于点
,点P是直线
上方抛物线上的一个动点,连接
,过点P作
,垂足为Q.
(2)求
的最大值;
(3)连接
,抛物线上是否存在点P,使得以C、P、Q为顶点的三角形与
相似?如果存在,请求出点P坐标;如果不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d57173ef4cd72eb270686875dfd623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69fff64ee6ea236550185efc7ed1b598.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/850e01debd266a398b597a1876dbb3ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/902f24325565a9dd95128a633a240da2.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
(3)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7ffcd1925a2b1259221c6a476152f7.png)
您最近一年使用:0次
4 . 如图,抛物线
经过点
,点
,与
轴交于点
,过点
作直线
轴,与抛物线交于点
,作直线
,连接
.
(2)
是抛物线上的点,求满足
的点
的坐标;
(3)点
在
轴上,且位于点
的上方,点
在直线
上,点
为直线
上方抛物线上一点,是否存在点
使四边形
为菱形,如果存在,请直接写出点
的坐标.如果不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ceba6b11658f2cc227b1f550ba25c3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/158f5a581695399f6ffdf65110dec692.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcf982e2547498e78cd6b95f5bcaaa62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4d6eb67e32034c7c7312d6442e5ef40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/782fdd93bd2396025b6e29c8636a3a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(3)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ae0c90667270559afceb64409f3d2bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
您最近一年使用:0次
5 . 如图,抛物线M过点
,与x轴交于点A和点B(点A在点B左侧),与y轴交于点C,顶点D的坐标为
.
(2)点F是线段
上一动点,求
周长的最小值;
(3)平移抛物线M得到抛物线N,已知抛物线N过点D,顶点为P,其对称轴与抛物线M交于点Q,若
,直接写出点P的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15d396579c93ecf1b2789f91a891044c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/782e07e9a7c070fad2520769894350c3.png)
(2)点F是线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
(3)平移抛物线M得到抛物线N,已知抛物线N过点D,顶点为P,其对称轴与抛物线M交于点Q,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6ad6f18959cedab5b2d64416e5da1f9.png)
您最近一年使用:0次
名校
6 . 如图,二次函数
的图象与直线
交于
、
两点.
的解集:______;
(2)求二次函数表达式;
(3)点E是线段
(包含A,B)上的动点,过点E作x轴的垂线,交二次函数图象于点P,交直线
于点N、若以点P,N,A为顶点的三角形与
相似,若存在,请求出点P的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e879263725e299745ff51d3c987ff7c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ca22e2dd18f8b9097b3ac60c75e7009.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fba20699c442ba18244e4c10622c6a75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/402ca5a419e7505abfd8df90263851f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbab052837b0c67270851cd0bcf592b6.png)
(2)求二次函数表达式;
(3)点E是线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/323eb2e41f461ac655012a986d5a27bb.png)
您最近一年使用:0次
7 . 在平面直角坐标系
中,已知抛物线
与
轴分别交于点
和点
,与
轴交于点
.
的坐标为
,求抛物线的表达式和点
的坐标;
(2)过点
作
轴的垂线
,将抛物线在
轴右侧的部分沿直线
翻折,将翻折得到的图象与原抛物线剩余部分的图象组成新的图形,记为图形
.
①在(1)的条件下,在图形
位于
轴上方的部分是否存在点
,使得
?若存在,求点
的坐标;若不存在,请说明理由;
②如图2,已知点
和点
是图形
上的点.设
,当
时,请直接写出
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b798a6667da82039e0d7c2a7eedb1945.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc6554ac3dff4a59833e407db887f6e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
①在(1)的条件下,在图形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4e9a6c7e94b2da8639a82d20cb9e7fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
②如图2,已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39569b59f92771c8aaffbd978ff2bd07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46291790c278dbd49126a53e2151b652.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74f1d746f5c042bf8451d2b12700716a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a45b16f576f2d24a05ec93810a20459.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
8 . 如图,在平面直角坐标系中,抛物线
与x轴交于
,
两点,与y轴交于点C,连接
.
(2)点P是直线
上方抛物线上一动点,过点P作
轴交
于点M,过点P作
交
于点N,求
的最大值及此时点P的坐标;
(3)把原抛物线
)沿射线
方向平移8个单位,点E为平移后新抛物线对称轴上的一点,连接
,将
沿直线
翻折,使得点E的对应点点Q落在坐标轴上.写出所有符合条件的点E的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a16d5576e32d37f09d5dc23a441c1533.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d57173ef4cd72eb270686875dfd623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f36488f7dff759ace2a27e56c3857056.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ed1fce01430ae31294c29d626626f0.png)
(2)点P是直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3f2515ae7bc5ab23505b430c4158e26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a99d5c7b301088fb6de4bac0e8dfaf04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2bb1548ddc0e5536a35b1bd78c4e7cd.png)
(3)把原抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a16d5576e32d37f09d5dc23a441c1533.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ed3797a759dca7272c4f8a2434423ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbfa1a2af7e38d33634c462300df381f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
您最近一年使用:0次
9 . 如图在平面直角坐标系中,抛物线
与
轴交于点
和点
(点
在点
的左侧),与
轴交于点
,经过点
的直线与抛物线交于点
,与
轴交于点
.
的坐标;
(2)点
是
轴下方抛物线上的一个动点,使
的面积为
,求点
的坐标.
(3)点
是线段
上一动点,点
是线段
上一动点,且
,请直接写出
的最小值为___________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de540364449219af5e2780977004a83d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/586d6b7a54a256cb0ecd0ea2d8262f6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ae79aa5fe83e708cb832b6893a15c52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/441dec590b47adc3678a291a3ec89a4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29a44d321ae2abfc4e566933a92637d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
(3)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3efdc45b50e82162f4fc35ddf2cecd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34101f186022b16edbd8e6a7aa38ef2f.png)
您最近一年使用:0次
10 . 如图1,在平面直角坐标系中,抛物线
与x轴交于点A,B(点A在点B的左侧),交y轴于点C,点A的坐标为
,点D为抛物线的顶点,对称轴与x轴交于点E.
(2)连接
,点M是线段
上一动点(点M不与端点B,D重合),过点M作
,交抛物线于点N(点N在对称轴的右侧),过点N作
轴,垂足为H,交
于点F,点P是线段
上一动点,当
的周长取得最大值时,求
的最小值;
(3)在(2)中,当
的周长取得最大值时,
取得最小值时,如图2,把点P向下平移
个单位得到点Q,连接
,把
绕点O顺时针旋转一定的角度
,得到
,其中边
交坐标轴于点G.在旋转过程中,是否存在一点G,使得
?若存在,请直接写出所有满足条件的点
的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10e71461c5134339b5b54a80e588640f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97b3c94d505e7c5bcce94afec4af3d92.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee50a23604ea2a9c1f3649dab97c2e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/150cbaad560246d84e6411c69dfb6718.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a33181b27b10690b4913595f8c1f46e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d830ff97422da8d6d4911ef6f22af4.png)
(3)在(2)中,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a33181b27b10690b4913595f8c1f46e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d830ff97422da8d6d4911ef6f22af4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18483c9c195ecd922772527fa85c0fcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/831c4fbec375b0bfc8258ed9b1a81ef8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d01f5c4d4177269ecb4b323defa063a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a50876b3f3f74193245abaa84262ecee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f159bdf3e82d6b58ad696ed844ab6d5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f94a5ff197dc688cc8cd754154c152f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a42da28be159399514cc6179a96e34b.png)
您最近一年使用:0次