1 . 设a、b、c均大于1,满足
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74c78b118b638c3bb3f4d90a656a67ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69d16ed0d7fd775727b600264c098e73.png)
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2008高三·江苏·竞赛
2 . 设
为指数函数
,在P(1,1)、Q(1,2)、M(2,3)、
四点中,函数
与其反函数
的图像的公共点只可能是点( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da53929a8f67b9aa3827fdbd73ebd265.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/934b37820d0cb76720e62b390c7a4939.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/135bcf6d7f7c04641823b90f1d038eee.png)
A.P | B.Q | C.M | D.N |
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3 . 设
,
.那么,( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05ab25e194914b7b2e80f448f20fd3ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3954af1ff295be769932c78b6f2c8dd7.png)
A.![]() | B.![]() |
C.![]() | D.![]() ![]() ![]() |
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4 . 已知
、
、
均为正数,且都不等于1.若实数
、
、
满足
,
,则
的值等于( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.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/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/913b94434fcc75d45c67304baaad0449.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee7eeedfa430910d0a3fd0d23332683e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d2d7ddd7ef3b6cde30018bc6a84b9e0.png)
A.![]() | B.1 | C.2 | D.4 |
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5 . 如果
、
,
,
,那么,
的值是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061813f1ec633c5c4c393c4de7938322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3de0a8f55644cf87d120a75710adf18e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5ef401afa6b97182509c08f4396f78b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88584cf1df43e28d03592c7998b1653.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6 . 若函数
在
上的一段图像可以近似地看作直线段,则当
时,
的近似值可表示为( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beb94dc04ff686b4e3023ff3f3f0ebb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ee0882f5f575d9e0ae7677efbd41b38.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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7 . 已知
,
,
,且
.则
与
的函数关系为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba85b6b0db89a8ae220a2e0385f84394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf61f9b78ee39f94b44df1c4363cac5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7c90e64d595a079c22c97b8340cd559.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ba80eb5253bed4d4834ebbf39980424.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
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8 . 过点
作直线
与两坐标轴分别交于点
、
.当
的面积
在
上取值时,可作直线
的条数为( )条.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f13bf66fc845b115de4ec45b4be0e23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd2981bf2261343f905ec1b5355a3c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab5e0524def52baf53480b8726784ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
A.2 | B.3 |
C.2或3 | D.2或3或4 |
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9 . 若实数
满足
,且
,则下列关系中正确的是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43fb3b4ec03df1e4d86c87287f8b563f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5442f2c9a69949cad7e8486f65a156e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44211b893635aadab26a4c9fe1d79615.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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10 . 设
,
,
.则
、
、
的大小关系为( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64856ef598a147442e139bf3c32bc77c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d9ca6e04a27e0516425f27af6fbf4d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0d2e24bf730166c97b6b3267667ddd2.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/e81e59019989b7dc2fb59b037ef6e010.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次