名校
1 . 如图,在矩形ABCD中,点A在双曲线
上,点B,C在x轴上,延长CD至点E,使
,连接BE交y轴于点F,连接CF,则
的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f4c80dcb55ad32da4e5c16067f17d30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e750ae795826d3e6388ca6c5c2bf9a0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eff00441c41fc516c37876d266fcbc6.png)
A.6 | B.7 | C.8 | D.9 |
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2 . 将正三角形、正方形、正五边形按如图所示的方式摆放,其中正方形和正五边形的下底边是水平共线的,如果
,那么
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcc3ef6a72ecee9efdca1f447fa243d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cc310194575262fb45352c2fbc19868.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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3 . 如图四边形ABCD与BEFG是并列放在一起的两个正方形,O是BF与EG的交点.如果正方形ABCD的面积是9,
,则
的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6f6c04bc017ced739230d14ba31948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/882475eea0be0fa89024b38d556fed0d.png)
A.1 | B.![]() | C.4 | D.![]() |
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4 . 若实数x满足
,则x应满足的条件是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30a577984141284e65ce4ed46723d393.png)
A.![]() ![]() | B.![]() | C.![]() | D.![]() |
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5 . 已知直线
上横、纵坐标都是整数的点的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4236f8562bc9caef6ef91560cc0d9a8a.png)
A.0个 | B.1个 | C.不少于2个但有限个 | D.无数个 |
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6 . 将4046减去它的
,再减去余下的
,再减去余下的
,再减去余下的
,依次类推,直至最后减去余下的
,则最后余下的数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e1cc1f5992de67604d7b20513ef57d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d9172b506339c2bb7e67832b784a3af.png)
A.4 | B.3 | C.2 | D.1 |
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解题方法
7 . 如图,在平面直角坐标系中,一次函数
与坐标轴交于点A,B,点C为
上一动点,过点C作
于点D,过点D作
轴,交y轴于点E,在直线
上找一点F,使得
,连接
,当
的值最小时,求点F的坐标为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca621dc42304f844ac15dad7062d3959.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b757f0c42ae5c9a2d6a4b19e5877b27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a880ffabfdf4a3ae2226616d80f08d5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc60f2fd9c91293a743111539202a169.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cad4595d5352b2884568a59d8d766a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34c88c0a51e576069b649e71df535ce5.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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8 . 如图,在双曲线
有点
,它的横坐标是1,过
分别作坐标轴的平行线交双曲线
于点
,
,连接
,则
的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85410ff00c81839ff9a64bf86dc36f5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f787a90a3e8605c711763924ac98c23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4b0c4b339f44bbac0e275eb0718234.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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9 . 设一元二次方程
的两实根分别为
,则
满足( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a164c67923fa020735240b3836c7fa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b3f51410d969f9fb41a595a028a6f06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
A.![]() | B.![]() ![]() |
C.![]() | D.![]() ![]() |
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10 . 已知
,且
,则与x最接近的整数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/983be9daf91e18f1cf60c859c1877fc8.png)
A.4 | B.3 | C.2 | D.1 |
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