1 . 设函数
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2617510d3739746b0633c37923fc9080.png)
(1)求实数
的值;
(2)判断函数的奇偶性,并说明理由;
(3)判断
在区间
上的单调性,并用函数单调性的定义证明结论;
(4)依据函数的性质,作出函数图象的示意图;
(5)若关于
的方程
恰有三个实数解,写出实数
的取值范围(不用证明)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cd99584f8a2813059907e69d13581c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2617510d3739746b0633c37923fc9080.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)判断函数的奇偶性,并说明理由;
(3)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e006fda65dd74bfed53c781c9b5f3a3.png)
(4)依据函数的性质,作出函数图象的示意图;
(5)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/338316b0fe50fdea0f2f75aec4c990dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2 . 设
,
,且a、b为函数
的极值点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/650b262681fdf608130ab36553b24009.png)
(1)判断函数
在区间
上的单调性,并证明你的结论;
(2)若曲线
在
处的切线斜率为
,且方程
有两个不等的实根,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bf717b54f199a2fcb28e988fc2da8f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f139fc1ad6e0cb114f1c6e2be1dfa995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/650b262681fdf608130ab36553b24009.png)
(1)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bd2a15b848dbede398dac79c22a017b.png)
(2)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3edbd40e04e2a943051fa83d6e511add.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e09f43349742cd3e95d75ffa7f17fbd4.png)
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名校
解题方法
3 . 已知函数
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/10/b62d7750-5bd3-428d-8f8f-2be12c0a7c09.png?resizew=243)
(1)画出f(x)的图象,并写出
的解集;
(2)令f(x)的最小值为T,正数a,b满足
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91fae2a874cbb5f6bb6d45f2e08a592c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/10/b62d7750-5bd3-428d-8f8f-2be12c0a7c09.png?resizew=243)
(1)画出f(x)的图象,并写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2b45f8224a638bb503ccb01749cfeb1.png)
(2)令f(x)的最小值为T,正数a,b满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d069a600152af92a7fada66aa91138a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134c1c7e7fd9c7700ee49b0cd788227a.png)
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2023-05-08更新
|
405次组卷
|
5卷引用:四川省乐山市2023届高三三模理科数学试题
4 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58e4c368ccf4592a35ac9ed7a4eff33a.png)
(1)判断
的奇偶性;
(2)判断
的单调性,并用单调性的定义证明;
(3)若方程
在区间
上恰有1个实根,求实数λ的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58e4c368ccf4592a35ac9ed7a4eff33a.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2751b3119e687012e3b209e3f9d0410f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac9c64ba837387d640de4b8e2191b1b5.png)
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解题方法
5 . 已知函数
在
上单调递减,在
上单调递增.记函数
.
(1)写出函数
的单调区间(无需说明理由)及其最小值;
(2)若直线
与函数
和
的图象共有三个不同的交点,从左到右依次记为
,
,
,试证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d2399c2a712a2890dcd0b195d3b9f1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad2edd8edcb21bd41584daf9bb95a5c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6097169b69ad927c38efd7d52ec65f95.png)
(1)写出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af79f45b5880c72a349500da9d8e118d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c16dac1e9bf5804c8907cbc59014d04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6fbfe23e06cc72f33f925dd5ee3351e.png)
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6 . 已知函数
.
(1)证明:函数
在
上单调递增;
(2)讨论关于x的方程
的实数解的个数(直接写出结论即可).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bff092a4af3fe58a74d100e96b51bdc.png)
(1)证明:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/189b2da6c420bf8f8900002d14f65f72.png)
(2)讨论关于x的方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab9944c6b48bb2187dccd52641c2.png)
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2023-03-23更新
|
667次组卷
|
3卷引用:辽宁省沈阳市2023届高一下学期教学质量监测数学试题
7 . 已知函数
.
(1)证明:当
且
时,
;
(2)若存在实数
,使得函数
在
上的值域为
,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7b1a9f3f2b5e88b5569e65609a6eaf7.png)
(1)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e14206c7d228a7c2259a7b27da8813.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aba934874cc9f2ab272fdff67ea23bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea134f599285e3d32d2ab3e7186990.png)
(2)若存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/203a8617cd3b5d8d94d1d5b28ea35f31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b77edf491b9950fa14eee45287dec59.png)
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名校
8 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7f60679789d490b87dd90facdbde2ab.png)
(1)证明:函数
在
上单调递减;
(2)讨论关于x的方程
的实数解的个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7f60679789d490b87dd90facdbde2ab.png)
(1)证明:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa482d7bcaa385bfc3548b42a4bfb60.png)
(2)讨论关于x的方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfc0a91be1c6211ac53e0ca9dd8156b8.png)
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2023-05-12更新
|
552次组卷
|
3卷引用:浙江省S9联盟2022-2023学年高一下学期期中数学试题
浙江省S9联盟2022-2023学年高一下学期期中数学试题福建省福州延安中学2022-2023学年高二下学期会考第二次模拟考试数学试题(已下线)第05讲 4.5.1函数的零点与方程的解(2)-【帮课堂】
9 . 已知函数
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/882cd70e-41a3-4411-b912-ba36adc0e946.png?resizew=208)
(1)求
;
(2)若
,求
的值;
(3)若函数
的图象与直线
有三个交点,请画出函数
的图象并写出实数
的取值范围(不需要证明).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1f3bf39c3a0cd87de6adfa5a202d396.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/882cd70e-41a3-4411-b912-ba36adc0e946.png?resizew=208)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/754386f1d84e582d52d8219080a81528.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32e9089e21e10f127e970d8e42e55244.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff4d12362d4b8dd25813953e1c5a94b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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名校
10 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/455a7b421f3555fcf2d882af5342b653.png)
(1)作出函数
的大致图像;
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/12/bb433498-e742-4417-8358-c658ef5edda8.png?resizew=244)
(2)结合图像讨论函数
的零点个数情况(无需证明).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/455a7b421f3555fcf2d882af5342b653.png)
(1)作出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/12/bb433498-e742-4417-8358-c658ef5edda8.png?resizew=244)
(2)结合图像讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95eb878bdb0aa083e327f97b63f142c0.png)
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