已知函数
.
(I)当
时,求函数
的单调区间;
(II)若函数
的图象在点
处的切线的倾斜角为45o,问:m在什么范围取值时,对于任意的
,函数
在区间
上总存在极值?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f5268d35056cfd7ce7463d7008588d7.png)
(I)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(II)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/150e8e4ca6aa729a72a6a17c36b8ebfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5060846de21d4eff279cbf4a8053fe64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f269cfe31794d0095de3f1eb8e842db3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28a2eafb3dd274dd9b98d83c38e87802.png)
2012·江西抚州·一模 查看更多[3]
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更新时间:2016-12-01 20:47:21
|
【知识点】 高中数学综合库
相似题推荐
解答题-问答题
|
适中
(0.65)
解题方法
【推荐1】光线从点
射出,到
轴上的点
后,被
轴反射到
轴上的点
,又被
轴反射,这时反射光线恰好过点
,求光线
所在直线的斜率.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6646e758862a34d89ee14de8a1ea13b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4efe510a22edfae5f57f6c5913ae98e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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解答题-问答题
|
适中
(0.65)
名校
【推荐2】已知函数
,
.
(Ⅰ)若函数
为偶函数,求
的值;
(Ⅱ)若函数
在区间
上的最小值是
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/389df5bf66ae866f474083813c20bbda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/944c02f1425e9c700c928b5a542bd04b.png)
(Ⅰ)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(Ⅱ)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e71dbce0ccda0f5df7d0555fa23bf770.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解答题-问答题
|
适中
(0.65)
【推荐3】将函数
的图象向左平移
(
)个单位长度,再将所得图象各点的横坐标扩大到原来的
(
)倍,纵坐标不变,得到偶函数
的图象.
(1)求
的单调递增区间(用b表示);
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f71434ae170a623f75ac58a952ae0e5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c553c5541d2f5838f776e67cfb6b9592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/731bdc8d2686a05f12a2ba8a7e3b01be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/600a745ddcd172f05242a2962feaa4f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba967cf3a027551dd1dfdb01292dfdc6.png)
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