用反证法证明命题“设
为实数,则函数
至少有一个极值点”时,要作的假设是
![](https://img.xkw.com/dksih/QBM/2016/8/19/1572985676013568/1572985681256448/STEM/85e8457fef4847518ceb9e85601054fd.png)
![](https://img.xkw.com/dksih/QBM/2016/8/19/1572985676013568/1572985681256448/STEM/6ec6900db6634eff847ac1e87eeaebf8.png)
A.函数![]() |
B.函数![]() |
C.函数![]() |
D.函数![]() |
更新时间:2016-08-19 10:39:34
|
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单选题
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适中
(0.65)
解题方法
【推荐1】已知
,
,
,则
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,
的大小关系是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a9aea5eeff4db42f0acc94d0a908d4c.png)
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A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】已知函数
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ee1110ccb3ee15321baa5ea4a482230.png)
A.函数![]() ![]() | B.函数![]() |
C.函数![]() | D.过坐标原点有两条直线与函数![]() |
您最近一年使用:0次
单选题
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【推荐3】定义在区间
上的可导函数
关于
轴对称,当
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的解集为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ecd9b82656fa92f59cc80c8938e12f.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
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单选题
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【推荐1】设
是函数
的一个零点,若
且
,则下列结论一定错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4bd29a2778fcd18867a2f1b0f784329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1757236a5ef1fc70a18f31d6d2438b18.png)
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A.![]() | B.![]() |
C.![]() | D.![]() |
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单选题
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适中
(0.65)
名校
解题方法
【推荐2】已知
,
,
,则
的大小关系为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59873cedd26b3f96dd7449423e4f8979.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63dc4729f74ed2683ab94212c5de6178.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29c37d8f785be897fd91e58b4a811cb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次