已知函数
,且
.
(1)判断
的奇偶性并说明理由;
(2)判断
在区间
上的单调性,并证明你的结论;
(3)若对任意实数
,有
成立,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03a1348cee4aef3487d0024958341c1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75590103b94d413023e139e683e589f5.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8938db94f49dcbe0c383fba0241bb0da.png)
(3)若对任意实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a3be5e468089b7ebb31ef39ca911798.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1b80077b91f3fb35723b2db465c9cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
更新时间:2020-12-27 10:25:05
|
相似题推荐
解答题-问答题
|
适中
(0.65)
名校
【推荐1】已知函数
(
且
).
(Ⅰ)若
,求
的值;
(Ⅱ)用定义证明
在
单调递增;
(Ⅲ)若
,
成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80b043fcf34272297ad32d0efc7e083b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825793ebd4bb376a09621f163ac990a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9437f34f9c1bde6c5b06daeaa751112.png)
(Ⅱ)用定义证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bdfed8d6862125dc1fecfce0322a750.png)
(Ⅲ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bbe2631a1be3cd85a4e6dd0090bfc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d7594211be320652b99a39b7f0bdff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
解题方法
【推荐2】已知函数
是奇函数,且
.
(1)求
,
的值;
(2)判断函数
在区间
上的单调性,并用定义给出证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/244553db2445852ae20ef80022892d6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/782aa447beeac2b74e0db67b1185034f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
(2)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5d6243e93c41978871cb23d8e66148d.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐3】已知函数
.
(1)判断
的奇偶性,并说明理由;
(2)判断
的单调性,并用定义法给予证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c25c458de74c991f0f524dd10143646c.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
解题方法
【推荐1】已知函数
.
(1)若
,判断
的奇偶性并加以证明
(2)当
时,先判断函数
在
,
上的单调性并用单调性的定义加以证明,再求函数
在
,
上的最小值;
(3)若对任意
,
,
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e669169e561dc6b1baf0addb71c31fdd.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2f3b9d4e2c69fde9d77434b8b98e7a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/200f24e682c93e02a87f3f9d57dc5d40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f124fb9eab689c537bb5ddf5012e35f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34a89c09d40f1ca26c70beadd071658b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f124fb9eab689c537bb5ddf5012e35f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34a89c09d40f1ca26c70beadd071658b.png)
(3)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38e96e9a314387fa1c76e86179ee0121.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34a89c09d40f1ca26c70beadd071658b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐2】定义在
上的函数
满足:
,
,
,且当
时,
.
(1)判断函数
的奇偶性并证明;
(2)判断函数
的单调性并证明;
(3)若对任意的
,存在
,使得不等式
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df6593a700bf3e89107556454666b787.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f370a1d4dd341e5ab1774a66c66c1204.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7da2fc2776b9bd3ca892a948c1f12328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
(1)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fad48c242b2320092f2071921696bad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22cf299c370690697ddb3a59bfc86bf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb28ffeb1f05a17b089e2bf139094146.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
解题方法
【推荐1】已知函数
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/947de3db-d89a-40b6-9da6-c6ee9856118c.png?resizew=217)
(1)画出
和
的图象;
(2)当
时,若
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7552820568378ad9776d12f6a16884ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4929e1c37d64c9213cda6275e23e548.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/947de3db-d89a-40b6-9da6-c6ee9856118c.png?resizew=217)
(1)画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29aef458f2367b76432719f6f56275d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa401aa6cd39edab3eae55cc6c8693f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】已知函数
.
(1)证明:
是奇函数;
(2)判断
的单调性,并用定义证明;
(3)若对任意的
,都有
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3426dfa1e46761ee9a343c50f782b07.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a19dc7342d33d6caa12d7702a8ec391.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2187ee1ea3b7e47a6283314322e5decf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c195723990cff646de47fce44b702165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次