甲、乙两人同时从寝室到教室,甲一半路程步行一半路程跑步,乙一半时间步行,一半时间跑步,如果两人步行速度跑步速度均相同,则先到教室的是 __ .
更新时间:2022-10-29 21:09:24
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【知识点】 作差法比较代数式的大小解读
相似题推荐
填空题-单空题
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适中
(0.65)
解题方法
【推荐1】设定义域为
的函数
满足下列条件:对任意
,
,且对任意
,当
时,有
.给出下列四个结论:
①
;②
;③
;④
.
其中所有的正确结论的序号是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48dc6d0827a159050e3fa55164f258b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57c3001c93a66c0ea9bee435c1f66efd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/684bcf84f0a266515bfafde0da903050.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54d37c6e1ad997e83e8c64d45e4c6972.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82c4867d943a5bdf868947a0073e5bda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/473c32af3082ace41f7240992a272758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7928143c3a39940202e5fad110ce3a8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ceba809e9839b9c4ab8da54098485d23.png)
其中所有的正确结论的序号是
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填空题-单空题
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适中
(0.65)
名校
【推荐2】给出下面类比推理:
①“若
,则
”类比推出“若
,则
”;
②“
”类比推出“
;
③“
,若
,则
”类比推出“
,若
,则
;
④“
,若
,则
”类比推出“
,若
,则
(C为复数集)”.
其中结论正确的个数为________ .
①“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b920eeb1c7e47f8cc07f66a9e210072.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a46e678bf9d2df5ad4c782b3dc22f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd851caf97d430a0c7d7ecd64871dd98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a46e678bf9d2df5ad4c782b3dc22f5.png)
②“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd859c67d222e39c28ceb9500890127.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29259d79d1c935bc15fec77061bd2aab.png)
③“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773ca22fc12ade9e60dbc749ba5cfa73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/697c3d4b11fc2ae913cc27b6b63fc199.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f22fec5a381ae8aca93d876e54c79de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2130dfd8a7f257cd858d55f01c2a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/697c3d4b11fc2ae913cc27b6b63fc199.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f22fec5a381ae8aca93d876e54c79de.png)
④“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773ca22fc12ade9e60dbc749ba5cfa73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/481ee0d1e39e92a4732eea90225eb94c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2130dfd8a7f257cd858d55f01c2a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/481ee0d1e39e92a4732eea90225eb94c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
其中结论正确的个数为
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