1 . 已知
,
是正整数,
,当
时,则有
成立,当且仅当“
”取等号,利用上述结论求
,
的最小值______ .
![](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/2958030ec9d7543dda1f529593a915e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac7609ba927b00e031d2cf5651efec6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b9e3a68f7e0c78d37f3ac4d118e515e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfbd4e25575245b5688f4b6e395fcd1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69b4ad01b8653e3e1383e27051a35c9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af1df2a8b51ea0efaaec4d6f96742e34.png)
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2019-11-08更新
|
211次组卷
|
4卷引用:山东省青岛市青岛第十七中学2020-2021学年高三上学期期中数学试题
山东省青岛市青岛第十七中学2020-2021学年高三上学期期中数学试题(已下线)2010-2011学年湖北省荆州中学高一下学期期中考试理科数学卷上海市第二中学2018-2019学年度高二下学期期末数学试题上海市奉城高级中学2018-2019学年高一上学期期中数学试题
2 . 下列类比推理中,得到的结论正确的是
A.把长方体与长方形类比,则有长方体的对角线平方等于长、宽、高的平方和 |
B.把![]() ![]() ![]() |
C.向量![]() ![]() ![]() ![]() |
D.把![]() ![]() ![]() |
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3 . 先阅读下面的文字:“求
的值时,采用了如下的方式:令
,则有
,两边平方,可解得
(负值舍去)”.那么,可用类比的方法,求出
的值是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a989bb1ea9e174060f703fc010ccf013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6b1b55a4122a7c05a0a9fd99c67eb9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f45f042dca89de1813c2e7c9d573cf2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab77a93a985ce46a928ecb94d1a965d.png)
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名校
4 . 定义
,
,
,
的运算分别对应右图中的(1),(2),(3),(4),则图中,
,
对应的运算是
![](https://img.xkw.com/dksih/QBM/2018/5/23/1951678634180608/1952265146785792/STEM/8a3e1bf3b306415f98b31f4cfa3827ef.png?resizew=294)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff5231cb0bfedf2f963c1830adfd74aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0d53e88f57b70212698434ba128616c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe577ab0905a8c4e660241f329395e39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bf7243acd3ff7d1e699c9481076d8aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://img.xkw.com/dksih/QBM/2018/5/23/1951678634180608/1952265146785792/STEM/8a3e1bf3b306415f98b31f4cfa3827ef.png?resizew=294)
A.![]() ![]() | B.![]() ![]() | C.![]() ![]() | D.![]() ![]() |
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2018-05-24更新
|
248次组卷
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2卷引用:【全国百强校】山东省济宁市第一中学2017-2018学年高二下学期期中考试数学(文)试题
名校
5 . 给出下面类比推理命题(其中
为有理数,
为实数集,
为复数集):
①“若
,则
”类比推出“若
,则
”
②“若
,则复数
”类比推出“
,则
”
③“若
,则
”类比推出“若
,则
”
④“若
,则
”类比推出“若
,则
”
其中类比结论正确的序号是__________ .(写出所有正确结论的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
①“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773ca22fc12ade9e60dbc749ba5cfa73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df72df862b00830a5d07b804fee9c420.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2130dfd8a7f257cd858d55f01c2a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df72df862b00830a5d07b804fee9c420.png)
②“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32ac12138178cb539a9e1c8f77587038.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0bfd40a0c55243257fd1bbe3a858e2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/343b7ba728f9b123b34a8f0ba4aa0c08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01465ecc2741cc4573fe2121bbbda0d2.png)
③“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773ca22fc12ade9e60dbc749ba5cfa73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5d31a5c00e830688badb6d91630b72a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2130dfd8a7f257cd858d55f01c2a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5d31a5c00e830688badb6d91630b72a.png)
④“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fac2a5afa85a76905377b5e607c1b11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/255483db09b1e523a4fcc1f618b98ec4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53b8c48a519181311dd565cac1341e2c.png)
其中类比结论正确的序号是
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名校
6 . 给出下面类比推理命题(其中
为有理数,
为实数集,
为复数集):
①“若
,则
”类比推出“
,则
”;
②“若
,则复数
”类比推出“
,则
”;
③“若
,则
”类比推出“若
,则
”;
④“若
,则
”类比推出“若
,则
”;
其中类比结论正确的个数有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
①“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/057db09504e1a3e62cd7fc678a7c31ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3647d99717ff020481648c687aca899c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4603a0b1b9fbaac15ac21da56abde39f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d237f97ae666c1e72b6914e54fa10531.png)
②“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448fe858a521a118af74040756d567de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aea2e805c72e4e0a355e0f4d4eccbbf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90c610ac00b57fc218488a5a2c035495.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be366e07704c89f9f3a51951837a499e.png)
③“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/057db09504e1a3e62cd7fc678a7c31ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7891119b04c8136d0fff4d576e1a1916.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4603a0b1b9fbaac15ac21da56abde39f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7891119b04c8136d0fff4d576e1a1916.png)
④“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0be07495dbc744e1ecabac66f748218.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebda728ac14f404e58eb3a6989e760ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f34ae3ad6dd06b31b32b2a3d7d975544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c5f5fe84aca98b031c228348fd99421.png)
其中类比结论正确的个数有
A.1 | B.2 | C.3 | D.4 |
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2016-12-04更新
|
609次组卷
|
9卷引用:山东省寿光现代中学2017-2018学年高二4月月考数学(文)试题
山东省寿光现代中学2017-2018学年高二4月月考数学(文)试题2015-2016湖南常德石门一中高二下第一次月考文科数学卷河南省郑州市第一中学2017-2018学年高二下学期期中考试数学(理)试题【全国百强校】黑龙江省实验中学2017-2018学年高二下学期期中考试数学(文)试题【全国百强校】江西省上高县第二中学2017-2018学年高二下学期第六次月考数学(文)试题甘肃省武威第五中学2018-2019学年高二5月月考文科数学试题河南省周口市淮阳区陈州高级中学2019-2020学年高二下学期期中数学(理)试题河南省洛阳市2020-2021学年高二下学期期中考试数学(文科)试题河南省南阳市第一中学校2021-2022学年高二下学期期中模拟考试数学文科试题
7 . 在实数集R中,我们定义的大小关系“>”为全体实数排了一个“序”.类似的,我们在平面向量集
上也可以定义一个称“序”的关系,记为“
”.定义如下:对于任意两个向量
,“
”当且仅当“
”或“
”.按上述定义的关系“
”,给出如下四个命题:
①若
,则
;
②若
,则
;
③若
,则对于任意
;
④对于任意向量
,若
,则
.
其中真命题的序号为__________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a965af9e5b642eac59f2cce02a66d66.png)
![](https://img.xkw.com/dksih/QBM/2014/12/26/1571936737443840/1571936743333888/STEM/b23a3e6395414191af332e0bc940a28c.png?resizew=23)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41aed82593c7243215fb61bd72396407.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fa7079dfcebe900aa27605981e4a76c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2210f152080d9a68a97c805f5c1cde96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f088dba1c49a90372d33f199373f6ea7.png)
![](https://img.xkw.com/dksih/QBM/2014/12/26/1571936737443840/1571936743333888/STEM/b23a3e6395414191af332e0bc940a28c.png?resizew=23)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/378d6b5612e51eacc7071a2e5cd9b09e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/364169e800302ecdbac0fc45931e9c22.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b48bd5a837ffd88aba5eab249b43a206.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd7c5aa14174df024274c2ab8912f7b9.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fa7079dfcebe900aa27605981e4a76c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fd5cce0d8ba711ab80c4e0452ea9dc9.png)
④对于任意向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5cd5ae1973dec0e19abf9a8cd08315c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fa7079dfcebe900aa27605981e4a76c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf62422562ca7208352128beb54f4e6.png)
其中真命题的序号为
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2014·山东日照·一模
8 . 已知双曲正弦函数
和双曲作弦函数
与我们学过的正弦函数和余弦函数有许多类似的性质,请类比正弦函数和余弦函数的和角或差角公式,写出双曲正弦或双曲余弦函数的一个类似的正确结论______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d31ea8f333397263e1bdb22d93c39c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11640aa55b1c025f200a98ed005b7bef.png)
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