已知函数
.
(1)当
时,求函数
在点
处的切线方程;
(2)求函数
的单调区间和极值;
(3)当
时,求函数
在
上的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e69d1bd454f3211c8995a437006fe9c.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fae35542c8e8114f3cfc05b400ba565.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/716b0df8074e6213f95fe6a25026d8bd.png)
23-24高二下·重庆黔江·阶段练习 查看更多[3]
更新时间:2024-03-21 22:25:03
|
相似题推荐
解答题-问答题
|
较难
(0.4)
【推荐1】设函数
,其中
,
.
⑴ 若
,
,求曲线
在点
处的切线方程;
⑵ 若
,求
的极值;
⑶ 若曲线
与直线
有三个互异的公共点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/065d0bea6e037cb2f45be418456d8594.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40e72f6b2ef3329828cb8fc873eeba7c.png)
⑴ 若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2a51944c720568f35d443589dfc1aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd876a2ed79c64bacc3e64b8ee92735e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9f8845aa2b51c460f2d798c9f62fa3.png)
⑵ 若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/972592728257d4ed956be1c5f3a097f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
⑶ 若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0661e857741909cfd0a6d3722a6c90b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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【推荐2】设函数
,其中
,若任意
均有
,则称函数
是函数
的控制函数”,且对于所有满足条件的函数
在
处取得的最小值记为
.
(1)若
,试问
是否为
的控制函数”;
(2)若
,使得直线
是曲线
在
处的切线,证明:函数
为函数
的控制函数,并求“
”的值;
(3)若曲线
在
处的切线过点
,且
,证明:当且仅当
或
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d0d9cf90ee9e4216f6c5e19f7f4d18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cacd894a237683d42c389bfa5c27936c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1376168658dbe7f5b7f4d75fb1db545a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b4955c5adc717b7f6f0b975e0724ff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecea80c2b9483e2c65d7572598a48dbd.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d709d206efc9c004cf7ba5301aad67e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e915b67f8f747698b8b46d37bc453667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94376e3e25de7fa4e506d40446b22ffc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e915b67f8f747698b8b46d37bc453667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55679c4d0d7c781f5db02eedb98baa4b.png)
(3)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0fa12e23f7017e424166ba4622b0e99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53a948d2f7732d7f03e986c63712089b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2023d0f4982eec32fae3b57bec6d8e31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/436b2649162a1b61b6ef0ab2bda35bc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4580cc037c0c760c728cdbb74a8154c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9de7f7734539f4ceb08561cd4d1ecbc6.png)
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【推荐3】已知函数
.
(1)求曲线
在点
处的切线方程;
(2)判断函数
的单调性;
(3)若
,其中
且
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55b630638ecc06e7d6ace39fb3d0133e.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abe7293b41466a63e85fca5b4c45f2f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
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【推荐1】已知函数
,
(1)若函数
在
处的切线也是函数
图象的一条切线,求实数
的值;
(2)若
,且
,判断
与
的大小关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7eee93548a520f30e70b3fd9f8b85ce.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f59c9cb53e0fcc57679240b54f55cd79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b672f564d03ed46d092bb130f229ad8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c829432ad2e0e2cc68d4efe72a2d7186.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f17504c9690e4dd35cc5904f6f83bab6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0223178951569fd4add0b20b342e9b5a.png)
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【推荐2】已知
为实数,用
表示不超过
的最大整数,例如
,
,
,对于函数
,若存在
,
,使得
,则称函数
是“
函数”.
(1)判断函数
,
是否是“
函数”;
(2)设函数
是定义在
上的周期函数,其最小正周期是
,若
不是“
函数”,求
的最小值;
(3)若函数
是“
函数”,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2ab85825d4a002600ca41bd3cd2ee7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/551910c8b02d8508338c99928c2047a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/613004861ffc72cf3e54fd76340668b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78846883d089a0648f0f8ab652f559fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcd9218a657b17654c5d757a6f7dee9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac8509800d6fa7569c2e296618e8f38d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fa42f5dd2e695379dec1fda46deb29b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
(1)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f96f66d35af3d90802e89ae13d254056.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/506325da976124d4d251a7fcd58f80fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/325cd3e57465c5cc93f068c94c2b8f7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
【推荐1】已知函数
.
(1)求函数
的极大值;
(2)若函数
在区间![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8337356363b245d54df0660ffd560c8a.png)
其中
上存在极值,求实数
的取值范围;
(3)如果当
时,不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5220c1d29955df47343122a463c46a92.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8337356363b245d54df0660ffd560c8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1b6d2853ae57f4d2c3b5a0ac6fd4a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)如果当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2fb40a36a293471742ce75f6b9635b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ceec8999ff14a052ae076ff9f28cecd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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【推荐2】已知函数f(x)=ln(x+1)+
(a∈R).
(1)当a=1时,求函数f(x)在点(0,f(0))处的切线方程;
(2)讨论函数f(x)的极值;
(3)求证:ln(n+1)>
(n∈N*).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3855cad162ed7bdf5b8293e9d8844ae.png)
(1)当a=1时,求函数f(x)在点(0,f(0))处的切线方程;
(2)讨论函数f(x)的极值;
(3)求证:ln(n+1)>
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf8daf382c942f0e64ac03c1d13cdd9d.png)
您最近一年使用:0次
解答题-问答题
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较难
(0.4)
【推荐3】已知函数
,
.
(1)求曲线
在点
处的切线方程;
(2)求函数
的单调区间;
(3)判断函数
的零点个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d548b8058155d9fff8ac94cda19994a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0825c5b24d09129bb2602dd4df60d9a.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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【推荐1】已知函数
.
(1)讨论函数
的单调性;
(2)当
时,令
,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433f148a2f8b13ea6dfbcc835d3a60e3.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6d251acaa5735843049722a6d6d4a4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4acda6b6464db27e1ec18a1522406d2.png)
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【推荐2】已知函数f(x)=x+alnx,a∈R.
(1)求函数f(x)的单调区间.
(2)当x∈[1,2]时,都有f(x)>0成立,求a的取值范围.
(3)试问过点P(1,3)可作多少条直线与曲线y=f(x)相切?(直接写出结果,不必说明理由)
(1)求函数f(x)的单调区间.
(2)当x∈[1,2]时,都有f(x)>0成立,求a的取值范围.
(3)试问过点P(1,3)可作多少条直线与曲线y=f(x)相切?(直接写出结果,不必说明理由)
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