一对实数
满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a3d53b837b06fb4d26711d35c9ab470.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2aedd0b67753454f6510b6f95ac11819.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a3d53b837b06fb4d26711d35c9ab470.png)
22-23高一上·江苏镇江·阶段练习 查看更多[2]
更新时间:2022-12-20 17:31:12
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适中
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名校
【推荐2】地震里氏震级是地震强度大小的一种度量.地震释放的能量
(单位:焦耳)与地震里氏震级
之间的关系为
.已知两次地震的里氏震级分别为
级和
级,若它们释放的能量分别为
和
,则
_____________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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解题方法
【推荐1】已知函数
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40e548e2b97f084d86b322839af1eba9.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8032a99f48acd121830c261d713d2fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cca3ab57d05da3e2faab020066e6a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40e548e2b97f084d86b322839af1eba9.png)
您最近一年使用:0次
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【推荐2】给出下列命题:
①在区间(0,+∞)上,函数y=x-1,y=
,y=(x-1)2,y=x3中有三个是增函数;
②若logm3<logn3<0,则0<n<m<1;
③若函数f(x)是奇函数,则f(x-1)的图象关于点(1,0)对称;
④若函数f(x)=3x-2x-3,则方程f(x)=0有两个实数根,其中正确的命题是.
①在区间(0,+∞)上,函数y=x-1,y=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54e8ad843444acb3c09f49c2ab657fa6.png)
②若logm3<logn3<0,则0<n<m<1;
③若函数f(x)是奇函数,则f(x-1)的图象关于点(1,0)对称;
④若函数f(x)=3x-2x-3,则方程f(x)=0有两个实数根,其中正确的命题是.
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解题方法
【推荐1】已知
且
,若
是定义在
上的单调递减函数,则
的取值范围是_________ .
![](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/e12e5900b53394be1824eb8f6b609b6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
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解题方法
【推荐2】已知函数
在
上任意
,都有
成立,则实数
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93d2aada2389d833fab1a7b736035a12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b6fbd08afa059e0fd6196f6a5b8c31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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