如图,在
中,
,
,AD与BC交于点M,设
,
.
![](https://img.xkw.com/dksih/QBM/2022/5/30/2990401877090304/2991518168334336/STEM/157bc5f6d37740a2a7e22778df998934.png?resizew=313)
(1)若
,求x及y;
(2)在线段AC上取一点E,在线段BD上取一点F,使EF过M点,设
,
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d006e3de1076261649a953431ec304.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ad23aed795ff24e7f9f8d50ebbf2e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48ac5f94e56c4679a32df00c5bb57964.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63666d7cc3b50ada407f904098e163c7.png)
![](https://img.xkw.com/dksih/QBM/2022/5/30/2990401877090304/2991518168334336/STEM/157bc5f6d37740a2a7e22778df998934.png?resizew=313)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b7c78eb2bc2854db7c3fd6325cd7bb4.png)
(2)在线段AC上取一点E,在线段BD上取一点F,使EF过M点,设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/310a360849ed1eca0af5d14ded2ea475.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/593a00ef7eadb9127f12918737d5ebb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea06b07dda7f9934e04e747a46e94599.png)
更新时间:2022-05-31 23:22:12
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相似题推荐
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适中
(0.65)
名校
【推荐1】设点
是
所在平面动点
满足
.
(1)若点
在线段
上
且满足
求
的值;
(2)若点
不在
上,且满足
若
求
的面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2db9a58e185e4fd9c4f86efb24480f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9e0b71d7b357e8bb49cc3575fdd207b.png)
(1)若点
![](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/e2db9a58e185e4fd9c4f86efb24480f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9596f05a80ac0c7cea98f84858cc09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b41a384997b1c3a570b2eeb61aea30a.png)
(2)若点
![](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/09efe39063459fd5ae2b82f2276b59b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc889d032ca71e144a5e5a2108d7bda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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【推荐2】如图,在△ABC中,M是边BC的中点,N是线段BM的中点.
![](https://img.xkw.com/dksih/QBM/2021/7/3/2756375670046720/2760343463895040/STEM/2583daeb-428f-46ee-874b-db2935098e2a.png?resizew=214)
(1)若
,求
最小值;
(2)若
,△ABC的面积为
,求
的最小值.
![](https://img.xkw.com/dksih/QBM/2021/7/3/2756375670046720/2760343463895040/STEM/2583daeb-428f-46ee-874b-db2935098e2a.png?resizew=214)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88b39acb3e7de3e7d4f76a5ca8e8fbb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febf7413b35cf2889fdb57a6b519087c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3a059203f65774fd8f321faa9e8041.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bea3b7a66f2201648dacaa90e413f41.png)
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【推荐1】如图,在平行四边形ABCD中,E,F分别为CD,BC的中点,BE与AC,AF分别相交于M,N两点.
(1)若
,求λ;
(2)若
,求
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/4/9217a766-ac6c-4e81-8219-3ac241a85c2b.png?resizew=181)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d30fda28e30a3ea63f6b5620cf52493d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c292fc517a49a91a64e3bc3a5dfafd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1905448d38b7465423fe637d700f1552.png)
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【推荐2】如图,在
中,
是
的中点,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/016e7a081243a9133132863e0a23393c.png)
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/25/fe618020-2cc7-46ef-b393-193fd86a611b.png?resizew=160)
(1)求
;
(2)若
,
,求
和
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/016e7a081243a9133132863e0a23393c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e4fb1ea1c832e7592eb9c619b0fe53b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/25/fe618020-2cc7-46ef-b393-193fd86a611b.png?resizew=160)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6c7127e3ffa52e588c100d8e6c70f40.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61e17e00cff3abf4080f4cac5a2962cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a19935477a4b25cda6ec2e4697d41427.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1100379a4385b9ce064847bc21760adc.png)
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解题方法
【推荐1】
(1)已知
,
,求函数的最小值;
(2)已知
,
,函数
的图象经过点
,求
的最小值.
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3f906786ce4dcd8b003772c14cf4977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58e7cc90aa8b5049936c5a22f2b8949f.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b74110bc818c2f5a53d63451c5251eb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/436a2732e9c9d5ce401c448cd9de80e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae4c908242ace363d97fc335b78db5cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65f3a05e608e2dc05ccdfdc310e06938.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7a8c86b7311ba8c0ce5764b30c50373.png)
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【推荐2】已知正实数
满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82f41874327e21ef55fa8c7b5fa4c797.png)
(1)解关于
的不等式![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f55203770df4a952fbaa8bb4051cc1e8.png)
(2)证明
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82f41874327e21ef55fa8c7b5fa4c797.png)
(1)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f55203770df4a952fbaa8bb4051cc1e8.png)
(2)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/548e795ce9cb18f02033c9ca265c01be.png)
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【推荐3】已知
,且
.
(1)求
的最小值;
(2)求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2a9344f4fca7b9779ca7720e5277ea6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d30ac2a74a3bf4309b449bfd1f2fc1c1.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f29d5f376c75c41ae6af0c8a8565449.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0b013ba3b04994d3cc5d2347dad513a.png)
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