名校
解题方法
1 . 若
,则实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0fdda720f95c7e395fbfa98420fa316.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
您最近一年使用:0次
名校
2 . 科学家以里氏震级来度量地震的强度,设I为地震时散发出来的相对能量程度,则里氏震级度量r可定义为
,则7.8级地震和6.9级地震的相对能量比值为____ (结果精确到个位).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d57045cca5093da3cb32915dbd717a44.png)
您最近一年使用:0次
解题方法
3 . (1)已知正实数
,
满足
,求
的最小值,并求出此时
,
的值.
(2)已知
,
,试用
,
表示
,
![](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/5be97cd1c7111b654d87d8fbb63b6a84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f7266b2ef457b8ddeee3fa2cc24022e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a08a2a5540efcdb5a77aa4ea3049884.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/850df3e299d9b1ecbda7e3a59e2a255e.png)
![](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/3a8d30454d91131d81366bacbc6ac58d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4c350fce4005b7740558ca348d1506.png)
您最近一年使用:0次
2023高一·上海·专题练习
4 . 已知
,
.
(1)求
的值;
(2)
均为正实数,若函数
(
且
),且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd05133480fd619dfa87e2ccad22692.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5622b8aa8ecf2c1e8343511f17333f11.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55db12bc9a3b7bd2e6decaaea6ba387e.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9c6f22f18cae8604db3059650bb3e52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72e349f49908801a73999320f7a49820.png)
![](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/9bcedea06d273dd34124bb12414b03b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d491ae0720477e3cb0bea54764689359.png)
您最近一年使用:0次
2023高一·上海·专题练习
5 . 设
.
(1)求
和
的值;
(2)若把使
为整数的正整数
称为期盼数,试求
的期盼数
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13a5057faa1e0a9126cc1e4b488a292e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e74829cf4109f1713bbe280ddf25cf2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad26f2290cc0a4b643ddc01f1009b9cd.png)
(2)若把使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4725f6fee6cd77a0f3c974574b14f2b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cff5f6e83a6de4d84eb249e911833eeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2023高一·上海·专题练习
6 . 数学运算是指在明晰运算对象的基础上依据运算法则解决数学问题的素养,因为运算,数的威力无限;没有运算,数就只是个符号
对数运算与指数幂运算是两类重要的运算.
(1)试利用对数运算性质计算
的值;
(2)已知
,
,
为正数,若
,求
的值.
(3)定义:一个自然数的数位的个数,叫做位数
试判断
的位数
注
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
(1)试利用对数运算性质计算
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67e2a8f9b0f3797f27f37bbc3e078c43.png)
(2)已知
![](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/24f1a77df4f43746a2e3fa334503ae0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f46de8d6705dca5188ff5b0cdbfcb5a1.png)
(3)定义:一个自然数的数位的个数,叫做位数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54e4ae7cfe4ec9b923c0698bccf16840.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a301324443eb93b467134a86890dd9ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da0ae51db0f8cc9a7a7f9d09a9cd5df1.png)
您最近一年使用:0次
2023高一·上海·专题练习
7 . 已知
,
,
均为正数,且
.
(1)若
,求实数
的值![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32ca6fa9955690cec01db601e3abce0c.png)
(2)求证:
.
![](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/1581cc0ce70271c1b10d00fa0e3f628f.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c6d55fd1342220aa63c751dd7637a6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32ca6fa9955690cec01db601e3abce0c.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5456b692555edb3b304078ea5c8fa2a.png)
您最近一年使用:0次
2023高一·上海·专题练习
8 . (1)已知
,
,
是不等于1的正数,且
,
,求
;
(2)已知
,且
,求
.
![](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/913b94434fcc75d45c67304baaad0449.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee7eeedfa430910d0a3fd0d23332683e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d2d7ddd7ef3b6cde30018bc6a84b9e0.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43be59448c9a41edd3b0fc1888dd23b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/509f3b3c1900fb5a6370964162760a24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
您最近一年使用:0次
2023高一·上海·专题练习
解题方法
9 . 设实数
,
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d229cbec798c9c278a9b5979cb38247.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f362cfbe78da952049736e8f1ba543d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8303a9094027555a1651185d9aca5dbf.png)
您最近一年使用:0次
2023高一·上海·专题练习
10 . 若正实数a、b、c均不为1,满足
,且
,则
的值为________ .
![](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)
您最近一年使用:0次