1 . 下列命题的证明最适合用分析法的是( )
A.证明:![]() | B.若![]() ![]() ![]() |
C.证明:![]() ![]() ![]() | D.证明:![]() |
您最近一年使用:0次
2 . 分析法又称执果索因法,若用分析法证明:“设
,且
,求证
”,则索的因应是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce613eaa5df46a50174085ef5d1087fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e56f4504e0f80fd031c8b5f41832e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bff6d61a8eaff20b364a9e3235577c69.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
3 . 已知函数
,
是
的导函数,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78f7276f0dac30dc49657470686618e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b04824a308519a61318a82aa97a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
A.![]() |
B.![]() |
C.若![]() ![]() |
D.若![]() ![]() |
您最近一年使用:0次
2023-04-25更新
|
1230次组卷
|
5卷引用:北京市丰台区2023届高三二模数学试题
4 . 欲证不等式
成立,只需证( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de1e64a90a2f0c8e9425285e416e4c1c.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
5 . 下列命题的证明最适合用分析法的是( )
A.若![]() ![]() ![]() |
B.证明:![]() |
C.证明:![]() ![]() ![]() |
D.证明:![]() |
您最近一年使用:0次
2022-07-13更新
|
69次组卷
|
2卷引用:甘肃省庆阳市宁县2021-2022学年高二下学期期末考试数学(理)试题
6 . 要证
成立,只需证( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83db984f061c612a26cdfb1c3f277db4.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
7 . 求证:
.证明:因为
和
都是正数,所以为了证明
,只需证明
,展开得
,即
,只需证明
.因为
成立.所以不等式
成立.上述证明过程应用了( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/564b3f0440d047ffdd641fb56974355b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f499828bdc14df52f0427a78ef51cc5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7782200f8eab2b9add12b2a99b6a03b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/564b3f0440d047ffdd641fb56974355b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0825879cdd8323b3ff48e311aade56fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ae6be8f4788729fba5529f31660268e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ef35b7c74b6e11ee179054fd7bdba3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4d6e82ca711596894dedbe1896471ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4d6e82ca711596894dedbe1896471ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/564b3f0440d047ffdd641fb56974355b.png)
A.综合法 | B.分析法 | C.反证法 | D.间接证法 |
您最近一年使用:0次
8 . 一个二元码是由
和
组成的数字串
(
),其中
(
,
,
,
)称为第
位码元,二元码是通信中常用的码,但在通信过程中有时会发生码元错误(即码元由
变为
,或者由
变为
).已知某种二元码
的码元满足如下校验方程组:
,其中运算
定义为:
,
,
,
.已知一个这种二元码在通信过程中仅在第
位发生码元错误后变成了
,那么用上述校验方程组可判断
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/befe5d138993ca3d858c584d2b2768ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/596afe6f8149e39c53d36a759bee6151.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5095a28bb1b91bf6bed9e2cfbd76bb18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07096af3b99fd1cb11c31f19a2c6408e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3825c4d248eb61f80d236b78086eee3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a031dcc5c349c204498a8c285ca93b6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c3c2f679d53b91088ba6eb14c16cbc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b01e19990102a7077b5eb46273e5ef18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a7ce9b90403983a6e6755f07e622b33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6fe938141721f35e1f87cb0af12090f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/616403935c63b858f879051c4e7e5af0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2702b4829c9d79cdb54d4d5ca6bfc0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-04-04更新
|
1001次组卷
|
3卷引用:江苏省连云港市2022届高三下学期二模数学试题
江苏省连云港市2022届高三下学期二模数学试题广东省茂名市2022届高三下学期调研(三)数学试题(已下线)第一篇 代数与近世代数 专题2 群、环、域等新定义问题 微点2 群、环、域等新定义问题综合训练加习题
名校
9 . 已知
,
,若
,则P,Q的大小关系是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ed06744a52b1817394fbe2ef0abe8fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86a34e6769536579e01cf8503cbc408c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
A.![]() | B.![]() |
C.![]() | D.由x的取值确定 |
您最近一年使用:0次
2022-03-24更新
|
496次组卷
|
5卷引用:河南省2021-2022学年高二下学期联考(二)文科数学试卷
10 . 用综合法证明命题的推理依据是( )
A.归纳推理 | B.类比推理 |
C.演绎推理 | D.归纳推理和演绎推理并用 |
您最近一年使用:0次