已知函数
.现提供
的大致图像的8个选项:
(A)
(B)
(C)
(D)![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/26/74328c37-0bb0-4b9c-9d9e-42ae41492ae3.png?resizew=218)
(E)
(F)
(G)
(H)![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/26/b9e5ec4d-c92e-4593-83c0-2332571fed32.png?resizew=219)
(1)请你作出选择,你选的是( ) ;
(2)对于函数图像的判断,往往只需了解函数的基本性质.为了验证你的选择的正确性,请你解决下列问题:
①
的定义域是__________ ;
②就奇偶性而言,
是__________ ;
③当
时,
的符号为正还是负?并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ac4b273420f20df2f3218cf9e42257b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(A)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/26/7e36efe9-2104-4484-a331-146033b9f0ee.png?resizew=217)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/26/68b3cd76-5d87-4b15-b0c2-17170dde64c7.png?resizew=218)
(C)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/26/b358a306-fe01-4337-be99-89dbc0ceac42.png?resizew=217)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/26/74328c37-0bb0-4b9c-9d9e-42ae41492ae3.png?resizew=218)
(E)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/26/fc434962-9682-4270-8aff-f2cb38ea00ee.png?resizew=217)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/26/782c9791-7839-4570-a7ab-727411e09ea1.png?resizew=219)
(G)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/26/7f5e4246-3854-4e2e-84cf-21f09505c491.png?resizew=219)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/26/b9e5ec4d-c92e-4593-83c0-2332571fed32.png?resizew=219)
(1)请你作出选择,你选的是
(2)对于函数图像的判断,往往只需了解函数的基本性质.为了验证你的选择的正确性,请你解决下列问题:
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
②就奇偶性而言,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
③当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca542e78b7d77d008c9c4752afa91a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
更新时间:2017-11-27 09:47:35
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解题方法
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解题方法
【推荐2】已知函数
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(1)讨论函数
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【推荐3】一个完美均匀且灵活的平衡链被它的两端悬挂,且只受重力的影响,这个链子形成的曲线形状被称为悬链线(如图所示).选择适当的坐标系后,悬链线对应的函数近似是一个双曲余弦函数,其解析式可以为
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时,判断
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时,若
的最小值为
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49757d6d62b9c313b11aafd537475845.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db0b38c8ec2cf6a3b999dd2f851179cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba1c15263cbb460891a4af6a9c693060.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/007a2c5b15ecfabfb01e8d2c0f5793bd.png)
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(0.65)
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