解题方法
1 . 已知函数
.
(1)求
的定义域,并证明
是奇函数;
(2)求关于
的不等式
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2b1f7e0e3a14dd94ffb218d635727a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a880edb1b185a72376bf4bb6beeaaab.png)
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2 . 已知函数
.
(1)当
时,判断
的单调性,并用定义加以证明;
(2)当
是偶函数时,函数
的图像在函数
图像下方,求b的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c25cd0bd1c4eaeb0de102d757802edce.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5095a28bb1b91bf6bed9e2cfbd76bb18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4448fba32be25be1cbab638caf88b56f.png)
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3 . 若函数
对任意实数
,
都有
,则称其为“保积函数”.现有一“保积函数”
满足
,且当
时,
.
(1)判断“保积函数”
的奇偶性;
(2)若“保积函数”
在区间
上总有
成立,试证明
在区间
上单调递增;
(3)在(2)成立的条件下,若
,求
,
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.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/b97b02cc48dab7860567b6c7762b2e87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40aa8429b2b7d252700f2813c259592d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca542e78b7d77d008c9c4752afa91a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/216596e85d5b13220fa0c326948f05d1.png)
(1)判断“保积函数”
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若“保积函数”
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870ebc2f7aabb028024894568d749934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870ebc2f7aabb028024894568d749934.png)
(3)在(2)成立的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/896df31f80127adbae738b3a014bd4e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c1a7019c44757feab4fc0b40db8d3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/966cc43fa3220739f2d2e091fe4b30f4.png)
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4 . 设函数
,
.
(1)判断函数
的奇偶性,并证明;
(2)写出函数
的单调区间(直接写出结果);
(3)若
,使
成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5649d1b1f611385016e25b6409bdea5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac0eb0ec6bd320f34e03008444d924f.png)
(1)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(2)写出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ae69f34beea60ab5919034a7b44934e.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85544d5708b61d729152499860334fc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd70f369f90b1770cd4b290c5ad78b58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
5 . 从①
;②
这两个条件中任选一个填入题中的横线上,并解答问题.
已知函数
________.
(1)求
的值;
(2)判断
在
上的单调性,并用单调性的定义证明你的判断.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/388b6b8cb9973fd4e2045dadc5b1fd99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/801006cf934e5fce39398020e3ffa6ab.png)
已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ba99a5c5661eedaef4b36ade1a7c5c5.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c4eb5915ce9fcca8a4281cd6966caab.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
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2024-01-03更新
|
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2卷引用:辽宁省辽阳市2023-2024学年高一上学期1月期末考试数学试题
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解题方法
6 . 已知函数
的单调递减区间为
,函数
.
(1)求实数
的值,并写出函数
的单调递增区间(不用写出求解过程);
(2)证明:方程
在
内有且仅有一个根
;
(3)在条件(2)下,证明:
.
(参考数据:
,
,
.)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/387a35447fe9069587d70c9bf9aca4da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e10140ab3cdc13d710a65b2287c892b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9f049a5f960728c60a909821b2404b.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87296504fd8313d1c10842e4db22ea1a.png)
(2)证明:方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11a3e2f00d1df62b3114f03f20877c3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d655ee6d4c2285b6f59652360862d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
(3)在条件(2)下,证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4287d11737a987758112fb7494cc12fd.png)
(参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/594663e98b797cdc4efbd098cc15854f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb92b2f1b067084b3eb3103bb1353520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35b7cfcc147916ae7eeb5d557fea945e.png)
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解题方法
7 . 已知函数
且
.
(1)求
的定义域,判断
的奇偶性并给出证明;
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82da026cf6076d8009620698b0f1cb31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37fa1476cf3552b9ae91ef039b1c6c80.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55fbf4529d247ae8d2e82db507833931.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解题方法
8 . 已知是公比不为
的等比数列,
,且
.
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a96f2720c0e0cd9e4a34975a8b6d080b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b40ff589d72073c83c8cd57d67bfbcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9fb028fe090cf1615fbee95042ab699.png)
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9 . 如图,是一座“双塔钢结构自锚式悬索桥”,悬索的形状是平面几何中的悬链线,悬链线方程为
(c为参数,
),当
时,该方程就是双曲余弦函数
类似的有双曲正弦函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b383983da73f97c0ec7922556b84c49.png)
和
的值;
(2)证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70dfa06870da52663bbb4c7e18217dd9.png)
(3)
不等式
恒成立,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ad2f5a11d7437f506adab0996961269.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/594663e98b797cdc4efbd098cc15854f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4580cc037c0c760c728cdbb74a8154c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7d712038d937090679d0e8cee56b47a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b383983da73f97c0ec7922556b84c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7b3d6bb49565cf01620a0259431d7ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1272e4f338038b3b9468cb9ecc06fe26.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70dfa06870da52663bbb4c7e18217dd9.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8d489d153159fcf945322bf0c6761a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3120403a25e9fc836f06a7781d23c6ec.png)
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10 . 设函数
.
(1)证明函数
在
上是增函数;
(2)若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a0a159abf4967cde913461cdfa43b01.png)
,是否存在常数
,
,
,使函数
在
上的值域为
,若存在,求出
的取值范围;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b98daf65925db94639ad1ef35bb782e.png)
(1)证明函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870ebc2f7aabb028024894568d749934.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a0a159abf4967cde913461cdfa43b01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e1295b852efee8d6d0a92cbe38439c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e03da8991b693adefa96a2f61b548d74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/475963eea170ff0bbdaf2f0b706dfc34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db527571cfd256c515424c6f9d114284.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36f68bca234d478ab4c052adf6193ab4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2023-12-28更新
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