1 . (1)求
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/200d092259dbcdf90fafab3a1066fa68.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/670d5605b4b36b69e66ca10cac608fff.png)
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2 . 若
,则
的值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d5e040e4b0c42079cc210d0ea43aec2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5372b6d2d95bdf92bf8a6e5a2d4b1713.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-01-02更新
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1477次组卷
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3卷引用:福建省莆田市九中2019-2020学年高一上学期期中数学试题
福建省莆田市九中2019-2020学年高一上学期期中数学试题陕西省咸阳市2018-2019学年高一上学期期末数学试题(已下线)专题10+2.2.1对数与对数运算(基础练)-2020-2021学年高一数学十分钟同步课堂专练(人教A版必修1)
名校
3 . 计算![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c55d074b63c608c7e3ece7cf0206c505.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c55d074b63c608c7e3ece7cf0206c505.png)
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4 . 设
,
,则下列正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fc42b77a459a4fd2fc92758fdd162a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a92bf72e3ab2d43a33343e81744f8a0.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 已知
,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30b26fbfbecbbcc0eee2eb8320e9d0a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f00f997ae12c30f551adb834e1d7ef8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9163ebe812708ee5337d62298c2e3363.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
6 . 求下列各式的值:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e1a84da4c1402858ca6611b12dedc5f.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b8de947e46433ca3888a349ffa9b19d.png)
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7 . 计算:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f25fbe26dc2a885e4c2597a5e5bfe3b.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2924bd62f5119b4bee60e9cca8e8fdf6.png)
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8 . 已知
,则用
表示![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e27ef39b3662300a41cb96bd75496c19.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dad6938069b15ee2fb51e0c0af1d77e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c974dafd7f992c28eb67787daa6387b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e27ef39b3662300a41cb96bd75496c19.png)
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9 . (1)已知
,
,若
,求
的值;
(2)设
,
,求
(用
、
表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03c5af8e02ca7f90185466e5da193344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8935dc56111774227294e35d34c6200f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f07bc53a25f3809d1e49b80d9f68d8cd.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dd277611174a20f1103c6cf31f6177c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c189ef61836bfad5c97d102f93eb821.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34a3cb5454b762817ba7619e53941e42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
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10 . (1)计算:
;
(2)已知
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26f20af1d8b3d9030c0291000f6a1335.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e8c4557c6e6a60f8a27eb2901e50fb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf00755ca3eba4b75fd0ed3bf72523c6.png)
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