解题方法
1 . 如果
,
,那么![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd1810555c0c28fe352841322b85bbc6.png)
________
;如果
,
,那么![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f384e98d574fa2676d61624285f88188.png)
________
;当
时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81baf482546f298ba289d723bc21e0c3.png)
________
,其中
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44cbc322861846709c08c7f1da746848.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd1810555c0c28fe352841322b85bbc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d02a08024fd5d4305bc2638b472fa48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0e271b6e63206285461a7552d11efd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f384e98d574fa2676d61624285f88188.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a0aa3929a1e72941a617ec65e2abc66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81baf482546f298ba289d723bc21e0c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8212e307836cb33f16575e23f6b808e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28652e52c0b02a343e618935ea625cbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
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2 . 已知二次函数
的图象过原点,且
,则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1bd0587f5d6a3b5db9e4a93e0dbc0ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec2c68c0a7c6fd2999591f028bc50fed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54bd888bfb31bdd6cddc28e687304406.png)
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3 . 下列说法正确的是( )
A.若![]() ![]() | B.若![]() ![]() |
C.若![]() ![]() ![]() | D.若![]() ![]() |
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2023-12-25更新
|
422次组卷
|
2卷引用:河南省南阳市六校2023-2024学年高一上学期第二次联考(12月)数学试题
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解题方法
4 . 已知
,则下列选项错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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5 . 若
,
,
,则下列命题正确的是( )
![](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/33f306d2b261f4c39a9fc0858d96e647.png)
A.若![]() ![]() ![]() | B.若![]() ![]() |
C.若![]() ![]() | D.若![]() ![]() ![]() |
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2023-12-23更新
|
397次组卷
|
3卷引用:浙江省丽水市三校联考2023-2024学年高一上学期12月月考数学试题
名校
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6 . (1)解不等式
;
(2)用作差法比较大小
与
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef79213e3f1afd42daf467a78474c7dc.png)
(2)用作差法比较大小
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1567f3ba3dd484d885a134239b6a7496.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f41d3f5345d3af16392fc6da4e669459.png)
您最近一年使用:0次
2023-12-20更新
|
644次组卷
|
2卷引用:广东省四会市四会中学、封开县广信中学2023-2024学年高一上学期第二次月考数学试题
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7 . 已知实数
、
,满足
,求
的取值范围.
![](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/9569526f4770a3779541b80e2447108e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00087d2a373565325eb56b0bb7129d4d.png)
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8 . 不等式组
的解集为
,则a的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbc11b548b1ff75108c57aa10638079a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d39bac2b9f9e2e4a5b33cd4873cb146.png)
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9 . 实数a,b,c在数轴上对应的点A,B,C如图所示,下列判断正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/17/e269e064-7638-4a16-8ba1-1dc7867faab4.png?resizew=197)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/17/e269e064-7638-4a16-8ba1-1dc7867faab4.png?resizew=197)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
10 . 十六世纪中叶,英国数学家雷科德在《研智石》一书中首先把“
”作为等号使用,后来英国数学家哈利奥特首次使用“<”和“>”符号,并逐渐被数学界接受,不等号的引入对不等式的发展影响深远.已知非零实数
满足
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/533cdd766fede0829067363e927bb834.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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