(完整版)高二数学必修五《等比数列》专项练习题.pdf
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1、高二数学必修五等比数列专项练习题一、选择题:1an 是等比数列,下面四个命题中真命题的个数为()an2 也是等比数列can(c0)也是等比数列na1也是等比数列lnan 也是等比数列A4 B3 C2 D1 2等比数列 a n中,已知 a9=2,则此数列前 17 项之积为()A216B216 C217D2173 等 比 数 列 an 中,a3=7,前 3 项之 和 S3=21,则公 比 q 的 值 为()A1 B21C1 或1 D1 或214在等比数列 an中,如果 a6=6,a9=9,那么 a3等于()A4 B23C916D2 5若两数的等差中项为6,等比中项为 5,则以这两数为两根的一元二次
2、方程为()Ax26x25=0 Bx212x25=0 Cx26x25=0 Dx212x25=0 6某工厂去年总产a,计划今后 5 年内每一年比上一年增长10%,这 5 年的最后一年该厂的总产值是()A1.1 4 a B1.1 5 a C1.1 6 a D(11.1 5)a 7 等 比 数 列 an 中,a9 a10=a(a 0),a19 a20=b,则a99 a100等 于()A89abB(ab)9 C910ab D(ab)108已知各项为正的等比数列的前5 项之和为 3,前 15 项之和为 39,则该数列的前 10 项之和为()A32B313C12 D15 9某厂 2001 年 12 月份产值
3、计划为当年1 月份产值的 n 倍,则该厂 2001年度产值的月平均增长率为()A11nB11nC112nD111n10 已 知 等 比 数 列na中,公 比2q,且30123302aaaaL,那 么36930aaaaL等于()A102B202C162D15211等比数列的前 n 项和 Sn=k 3n1,则 k 的值为()A全体实数B1 C1 D3 12某地每年消耗木材约20 万3m,每3m价 240 元,为了减少木材消耗,决定按%t征收木材税,这样每年的木材消耗量减少t25万3m,为了既减少木材消耗又保证税金收入每年不少于90 万元,则 t的范围是()A1,3 B2,4 C3,5 D4,6 二
4、、填空题:13在等比数列 an 中,已知a1=23,a4=12,则 q=_ _,an=_ _14在等比数列an 中,an0,且 an2=anan1,则该数列的公比q=_ _15在等比数列 an中,已知 a4a7512,a3a8124,且公比为整数,求a1016数 列na 中,31a且naann(21是正 整 数),则数 列 的 通 项 公式na三、解答题:17已知数列满足 a1=1,an1=2an1(nN*)(1)求证数列 an1是等比数列;(2)求an 的通项公式文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E
5、5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L
6、6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D
7、9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S
8、2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:
9、CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3
10、D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U
11、7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S218在等比数列 an中,已知对nN*,a1a2 an2n1,求 a12a22 an219在等比数列 an中,已知 Sn48,S2n60,求 S3n20求和:Sn13x5x27x3(2n1)xn1(x0)文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:C
12、J10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D
13、10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7
14、 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5
15、A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6
16、 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9
17、M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2
18、文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S221在等比数列an中,a1an=66,a2 an1=128,且前 n 项和 Sn=126,求 n 及公比 q22某城市 1990 年底人口为 50 万,人均住房面积为16 m2,如果该市每年人口平均增长率为 1%,每年平均新增住房面积为30 万 m2,求 2000
19、 年底该市人均住房的面积数(已知 1.0151.05,精确到 0.01 m2)文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10
20、C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J3U7 HA3E5A5W5L6 ZR6D9M5E3S2文档编码:CJ10C3D10J
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