如图,已知四边形
中,
,
,
,
,
,设
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/4/52e6957e-1647-4a51-af22-46dc7af1d42d.png?resizew=218)
(1)设边
的长为
,将
表示成
的函数
,(写成
的形式),并求出
的取值范围;
(2)将该四边形进行某种翻折,判断:①
与
是否可能会重合;②
与
是否可能会重合.并请说明你做出上述两个判断的理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9060f03b9ee41d70d135b1e1a8902ce9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d09a88dc7dc9cd668a57138e1ec71ea2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f6f95e7b64ef2c99935ca58e44df645.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbb53077d8d62f44415f4d56c6b5c081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d42e97eee705d164e6ac6de9ecd6d1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e30e586a8505faad251cc182676e0390.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/4/52e6957e-1647-4a51-af22-46dc7af1d42d.png?resizew=218)
(1)设边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8111b51754b9b448995098efecee98f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62d324cae510d98073af49fbe3efbe43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(2)将该四边形进行某种翻折,判断:①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
更新时间:2017-12-22 15:56:42
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【推荐2】已知函数
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(1)若
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(2)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bf73db6da96b2e3ef7b70beecb22363.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3261094c2750afd916ba4a6efbd915b.png)
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名校
【推荐1】直角走廊的示意图如图所示,其两边走廊的宽度均为
米,过点
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表示为
的函数;
(2)一根长度为
米的铁棒能否水平(即铁棒与地面平行)通过该直角走廊?并说明理由.(铁棒的粗细忽略不计)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(2)一根长度为
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【推荐2】已知某地一天从
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解题方法
【推荐1】已知函数
.
(1)若角
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的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d32431242e351dbb7e7518540acb98a2.png)
(1)若角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58e7c6b1e8d06e439c1ede19f99286c8.png)
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(2)求
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(2)求
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