1 . 教材中指出:当
很小,
不太大时,可以用
表示
的近似值,即
(1),我们把近似值与实际值之差除以实际值的商的绝对值称为“相对近似误差”,一般用字母
表示,即相对近似误差![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f994eff9ae722afe85b0167382c0c97d.png)
(1)利用(1)求出
的近似值,并指出其相对近似误差(相对近似误差保留两位有效数字)
(2)若利用(1)式计算
的近似值产生的相对近似误差不超过
,求正实数
的取值范围;
(3)若利用(1)式计算
的近似值产生的相对近似误差不超过
,求正整数
的最大值.(参考对数数值:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dc51e97939a8966daa015535a801561.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b796a70cdb0d3691dad665d844ebe65f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93daf697f42b3b3ad9fb5e2322d44a0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9079a440de24a2d643057c9c2dac0150.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/700458c01a7ad031e27d80ed43e9e882.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f994eff9ae722afe85b0167382c0c97d.png)
(1)利用(1)求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cca1df0916aa909f075208c4b2c6b244.png)
(2)若利用(1)式计算
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a335fc7c2c46946f0bf908c78bcc46fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/213c6487d477c3b399355b0df748a394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(3)若利用(1)式计算
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b18ba29eb7cbf1e389b8f5dae25e68c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/213c6487d477c3b399355b0df748a394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9ba9bb290a93a36e82f00c03036c8b.png)
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2 . 在
平面上,将两个半圆弧
和
、两条直线
和
围成的封闭图形记为
,如图中阴影部分.记
绕
轴旋转一周而成的几何体为
,过
作
的水平截面,所得截面面积为
,试利用祖暅原理(祖暅原理:“幂势既同,则积不容异”,意思是:两等高的几何体在同高处被截得的两个截面面积均相等,那么这两个几何体的体积相等)、一个平放的圆柱和一个长方体,得出
的体积值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ab8b026225a4e204e16b475a4ae3e39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee459429fee34d590a82150969b02ea6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c50866229ec5a3640fb250f9bd2192b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eefa44964db83759aff6fc8dd7ef8f28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f59d193e756cad07db4f3b1b785d5ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34295f3b3512aaadc8075413bd7cf351.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/f124269f-f36f-4b83-b505-fa0d0ced0382.png?resizew=199)
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3 . 和平面解析几何的观点相同,在空间中,空间平面和曲面可以看作是适合某种条件的动点的轨迹,在空间直角坐标系
中,空间平面和曲面的方程是一个三原方程
.
(1)类比平面解析几何中直线的方程,写出①过点
,法向量为
的平面的点法式方程;②平面的一般方程;③在
,
,
轴上的截距分别为
,
,
的平面的截距式方程.(不需要说明理由)
(2)设
、
为空间中的两个定点,
,我们将曲面
定义为满足
的动点
的轨迹,试建立一个适当的空间直角坐标系
,求曲面
的方程.
(3)对(2)中的曲面
,指出和证明曲面
的对称性,并画出曲面
的直观图.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5e336d6ca2cae3d6e6c3810d7e521a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a056074124fa54255811544a9d7770.png)
(1)类比平面解析几何中直线的方程,写出①过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baf95be25d34a7366bf4060d081329c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b4778dbc2ae0254e3841436fb3be24c.png)
![](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/e81e59019989b7dc2fb59b037ef6e010.png)
![](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/071a7e733d466949ac935b4b8ee8d183.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f1d16134dffa6533f2f58cb3f2fb8e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f4002efd54bf0f29f36d98839f7e9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5e336d6ca2cae3d6e6c3810d7e521a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
(3)对(2)中的曲面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
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4 . 对于给定的奇数
,设
是由
个数组成的
行
列的数表,数表中第
行,第
列的数
,记
为
的第
行所有数之和,
为
的第
列所有数之和,其中
.对于
,若
且
同时成立,则称数对
为数表
的一个“好位置”
(Ⅰ)直接写出右面所给的
数表
的所有的“好位置”;
(Ⅱ)当
时,若对任意的
都有
成立,求数表
中的“好位置”个数的最小值.
(Ⅲ)求证:数表
中的“好位置”个数的最小值为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb0ed48dd14479d683e4a55962d48c67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e80c0f65932e21d553f1ee34e0853ce3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7600d2cfbdc6146db96cc545706004f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbea10f0a025b941febac2156e25a702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07606e3ba938e4d498ca12888a9f628.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0c5b637112984758894ad031cdd513d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7600d2cfbdc6146db96cc545706004f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3c60a9228344af107a996e0cf722ea4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3c60a9228344af107a996e0cf722ea4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75e13bbc8749b8195586497b97fa7204.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6204adeb6094f46a2c2291c04c9414c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb6e4fb03f4b2dc1fb6fd374788ab971.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
1 | 1 | 1 |
0 | 0 | 1 |
0 | 1 | 0 |
(Ⅰ)直接写出右面所给的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0e329a94337ada7c88a4fad9b92f0eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(Ⅱ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1d1b048f3f9ea35a9685b44f49338b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2da41dadce7bd5104b60c4083ae8fa21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/916c046bbc89656371556c69bccd139b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(Ⅲ)求证:数表
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/856bd0a14a75864e34321ce18bb0c858.png)
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2019-05-09更新
|
366次组卷
|
4卷引用:【区级联考】北京市海淀区2019届高三年级第二学期期末练习(二模)数学理科试题
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5 . 定义:由椭圆的两个焦点和短轴的一个顶点组成的三角形称为该椭圆的“特征三角形”.如果两个椭圆的“特征三角形”是相似的,则称这两个椭圆是“相似椭圆”,并将三角形的相似比称为椭圆的相似比.已知椭圆
.
(1)若椭圆
,判断
与
是否相似?如果相似,求出
与
的相似比;如果不相似,请说明理由;
(2)写出与椭圆
相似且短半轴长为
的椭圆
的方程;若在椭圆
上存在两点
、
关于直线
对称,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c368427afb8eb4c7bbeda129665950f7.png)
(1)若椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cac07fb87831a560d43952aa5d5c3496.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/211b9e53e4677ae9e2b20d5f7ce0a4e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39a52e26180930ad5b56a8a45f28a0f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/211b9e53e4677ae9e2b20d5f7ce0a4e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39a52e26180930ad5b56a8a45f28a0f2.png)
(2)写出与椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/211b9e53e4677ae9e2b20d5f7ce0a4e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2fdeba282b028321696be7f90f2cbfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ca18c89c398b435447b1970f6f00a43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ca18c89c398b435447b1970f6f00a43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a28be4d5a16cf245f6fa7c4088fee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe9eeee83b4b7c6ceac7828ff534ce15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a809b1f0e6f0aade0298bf90fac9c6c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2fdeba282b028321696be7f90f2cbfe.png)
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2019-12-06更新
|
393次组卷
|
2卷引用:上海市青浦区2016-2017学年高二下学期期终学业质量调研数学试题
6 . 已知“整数对”按如下规律排成一列:
,
,
,
,
,
,
,
,
,
,
,则第222个“整数对”是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/980a38b0be31576fa612b262903030d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fef9380b394a4bd829c83a5a5b4c859.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c79524ae8e494739dbcc5097a0f7c78a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f20a97714f1557df361857a9ddc30b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b8c1bc582e15c8ae375017eff356fde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c39ed4cb2142dc0079cc4fe4b660558f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/051e525ab49c10a1cdddbb248d167827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60866c4aabfb0611541fbb236fcc89c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a1f3420079628d3636d7f14d7707a0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f104804c2174b5b6f62f70ff8e47a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07096af3b99fd1cb11c31f19a2c6408e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2019-04-16更新
|
797次组卷
|
5卷引用:【全国百强校】广东省汕头市金山中学2018-2019学年高二下学期第一次月考数学(文)试题
18-19高二下·上海·期中
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7 . 平面图形很多可以推广到空间中去,例如正三角形可以推广到正四面体,圆可以推广到球,平行四边形可以推广到平行六面体,直角三角形也可以推广到直角四面体,如果四面体
中棱
两两垂直,那么称四面体
为直角四面体. 请类比直角三角形中的性质给出2个直角四面体中的性质,并给出证明.(请在结论
中选择1个,结论4,5中选择1个,写出它们在直角四面体中的类似结论,并给出证明,多选不得分,其中
表示斜边上的高,
分别表示内切圆与外接圆的半径)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/766565857d28617cc4c2a26ecf76ec24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5332ae9dc9d9c4cff2ac5262714d899c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dce64d610e7f309e414d9abe7ff2e3.png)
直角三角形![]() | 直角四面体![]() | |
条件 | ![]() | ![]() |
结论1 | ![]() | |
结论2 | ![]() | |
结论3 | ![]() | |
结论4 | ![]() | |
结论5 | ![]() |
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8 . 阅读下列不等式的证法,再解决后面的问题. 证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74c6453b90f28f864ef0b5ed664c9a81.png)
证:令
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c07689c36e2f4a7ca93d98f40ce9c385.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63750e1f59d21a9d913a1783c9e29e60.png)
,故
.
(1)若
,利用上述结论,证明:
;
(2)若
,模仿上述证法并结合(1)的证法,证明:
.(提示:若
,有
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74c6453b90f28f864ef0b5ed664c9a81.png)
证:令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a54ee01214753a0cd1de20e713771b09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c07689c36e2f4a7ca93d98f40ce9c385.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63750e1f59d21a9d913a1783c9e29e60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f09685d23264a068ba915f93d2d538a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74c6453b90f28f864ef0b5ed664c9a81.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d8ef2ca213bdf42163dd6503ed8a7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c538d0141764bc692306b72b203e6ca1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97ac0316a5700c2b6b2a007e5b469039.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a48c5178ba248de659f527fd08f0ec68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fa70cba471ba57de69c962db483173f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/964f30e8f81905c0c292ee34d6f272c8.png)
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9 . 定义变换
将平面内的点
变换到平面内的点
;若曲线
经变换
后得到曲线
,曲线
经变换
后得到曲线
,…,依次类推,曲线
经变换
后得到曲线
,当
时,记曲线
与
、
轴正半轴的交点为
和
,某同学研究后认为曲线
具有如下性质:①对任意的
,曲线
都关于原点对称;②对任意的
,曲线
恒过点
;③对任意的
,曲线
均在矩形
(含边界)的内部,其中
的坐标为
;④记矩形
的面积为
,则
;其中所有正确结论的序号是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29d819bfb7479b5873f7fa2541697658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82d5063a37b8e3e88c7a87267054d407.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a7959e5d5a687783adf38d2004fd95e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc7f40c3bfed77da57b41da844fec1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc31dcdb99754fc452ff2b92a2fb8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc31dcdb99754fc452ff2b92a2fb8c9.png)
![](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/1b25286f6029da66ce5270aacd05184f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c51b7bb4deadcb449f0112b7836f59f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc31dcdb99754fc452ff2b92a2fb8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc31dcdb99754fc452ff2b92a2fb8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc31dcdb99754fc452ff2b92a2fb8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa482d7bcaa385bfc3548b42a4bfb60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc31dcdb99754fc452ff2b92a2fb8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afd459e842089790c031e4e13695f2ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66d4e8502106802f1485c3b0f28f2664.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cac997fb53e58edb11f87edd8c6099b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afd459e842089790c031e4e13695f2ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a63801fa4cfc5d7eb49e443de8be44d.png)
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2019·陕西·高考模拟
名校
10 . 一布袋中装有
个小球,甲,乙两个同学轮流且不放回的抓球,每次最少抓一个球,最多抓三个球,规定:由乙先抓,且谁抓到最后一个球谁赢,那么以下推断中正确的是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
A.若![]() | B.若![]() |
C.若![]() | D.若![]() |
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2019-03-20更新
|
840次组卷
|
8卷引用:【省级联考】陕西省2019届高三第二次教学质量检测数学(理)试题
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