1 . 在一个传染病流行的群体中,通常有3类人群:
在一个600人的封闭环境中,设第n天S类,I类,R类人群人数分别为
,
,
.其中第1天
,
,
.为了简化模型,我们约定各类人群每天转化的比例参数恒定:
(1)已知对于传染病A有
,
,
.求
,
;
(2)已知对于传染病B有
,
,
.
(Ⅰ)证明:存在常数p,q,使得
是等比数列;
(Ⅱ)已知防止传染病大规模传播的关键途径至少包含:①控制感染人数;②保护易感人群.请选择一项,通过相关计算说明:实际生活中,相较于传染病A需要投入更大力量防控传染病B.
类别 | 特征 |
S类(Susceptible) | 易感染者,体内缺乏有关抗体,与I类人群接触后易变为I类人群. |
I类(Infectious) | 感染者,可以接触S类人群,并把传染病传染给S类人群;康复后成为R类人群. |
R类(Recovered) | 康复者,自愈或者经治疗后康复且体内存在相关抗体的I类人群;若抗体存在时间有限,可能重新转化为S类人群. |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d72f2cbabcb955a433e99bf0ee8ec020.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15526f7c892333030073b85fc3baee6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bf71cf37199d1275ecab9bec0854191.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cb9d3dc465add3927c6413c4e67921.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b3cf37e52060e71bb710f4a54addeb7.png)
S类→I类占当天S类比例 | I类→R类占当天I类比例 | R类→S类占当天R类比例 |
![]() | ![]() | ![]() |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3b41a1596f5bafd4126cdfa27cab1b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11048760a97aaf9b0e9bb3c1f7d82f65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf09e3b9c967b0910007878ee1ed861e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d1a0fd1ad044a9ecfcba672779bd678.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15526f7c892333030073b85fc3baee6.png)
(2)已知对于传染病B有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/553db32eb0934af3938b00f1391a62e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7cb43dbf4bfeaa09725d4747b5220d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/162f2427b62ce62e0af1dcf7803df960.png)
(Ⅰ)证明:存在常数p,q,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aba455b290aa6f2ebd42f764b532c815.png)
(Ⅱ)已知防止传染病大规模传播的关键途径至少包含:①控制感染人数;②保护易感人群.请选择一项,通过相关计算说明:实际生活中,相较于传染病A需要投入更大力量防控传染病B.
您最近一年使用:0次
2 . 两个数列
、
,当
和
同时在
时取得相同的最大值,我们称
与
具有性质
,其中
.
(1)设
的二项展开式中
的系数为
(
),
,记
,
,
,依次下去,
,组成的数列是
;同样地,
的二项展开式中
的系数为
(
),
,记
,
,
,依次下去,
,组成的数列是
;判别
与
是否具有性质
,请说明理由;
(2)数列
的前
项和是
,数列
的前
项和是
,若
与
具有性质
,
,则这样的数列
一共有多少个?请说明理由;
(3)两个有限项数列
与
满足
,
,且
,是否存在实数
,使得
与
具有性质
,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7728d33987f271f5ec625592076593b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02d032d57e0d95dddb3d4501249f1327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7728d33987f271f5ec625592076593b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02d032d57e0d95dddb3d4501249f1327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4ca4f2b82d9d7a8323c8d697338a6a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7728d33987f271f5ec625592076593b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02d032d57e0d95dddb3d4501249f1327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5839a256b56cb644d8a76fa40da0f339.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ce733aaa0bf65084fedbf529da36ef9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f255d0395fba51ca2d44293cca42e0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e668f6e2cbdb731bac88892e47fddf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e10f2f74e201f77f853e9ed9078615c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8140a39887c6b0b3f26b226c090a3127.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78908ea2f65b1af56be13743cf5c3faf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37e5531913e2f170465d8df01795cd51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf87d2d47a420aee5be760a6de0d3bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38ef4c4439b36c2847b0056a116d56d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58a28198a932f4f9a93a4c613bbc2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ce733aaa0bf65084fedbf529da36ef9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/233427826eb2233641fc3a9805f6d206.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e668f6e2cbdb731bac88892e47fddf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e10f2f74e201f77f853e9ed9078615c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f0f8b318bae5924c4d2b0194946f259.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d54d77d1248bbd1398a828a3389ce78f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37e5531913e2f170465d8df01795cd51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4ba468c3d2d7b3fa8e65885bfacf4a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d813f3ca8db41a4db6c18eac30fef98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38ef4c4439b36c2847b0056a116d56d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d813f3ca8db41a4db6c18eac30fef98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d21ab17f8694a07cfcc9e63389b34690.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d5d0896cc32b7f445c3dab320482515.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cce224c28ca451c4f105dc3b077736cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eded65284816fdf6bf335b0c2a78e6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a81decee0ccfa372af8951ca73ada38a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d21ab17f8694a07cfcc9e63389b34690.png)
(3)两个有限项数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/043d21c4badb8e2bd98390c7f1c25822.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10b3cf64372426d1d2faff63d34fdcd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
3 . 在平面直角坐标系上,有一点列
,设点
的坐标
(
),其中
. 记
,
,且满足
(
).
(1)已知点
,点
满足
,求
的坐标;
(2)已知点
,
(
),且
(
)是递增数列,点
在直线
:
上,求
;
(3)若点
的坐标为
,
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6312e18ae73e6f813edde9090c5a29d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf99487d7860d017c0747ff966edfd77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa17e7a42ccc8cc2d770f1c4b2a30243.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11284a6daf54a53681c718c04a64b2e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22838959473a14de8108f8ed14d32988.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e2e90eb114b5a715801233217bc8b92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aeaece50ab16fe201f539fec57d7c8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fbb1e9567c36b1dcf8b19e6fd8d74e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bbbbb1c51b8536342c8273d5fc970a9.png)
(1)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/749f5379e432a6057a1974a74d53c3f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3da824f15a854bfc12f4b9592bbf0997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/749f5379e432a6057a1974a74d53c3f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac00e6e4579910759d33c228bd084d1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bbbbb1c51b8536342c8273d5fc970a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e3646ea46e80a0b1a724f427beb067d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11284a6daf54a53681c718c04a64b2e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4bcad690c2623126fba9637d29637eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(3)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf9f50605db5d5f8f3a01ee8e474a112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b2c84e7b41a841a230ed5f8a42309aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/187b78fef7571b85b231de15f43a7e5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34d3a5e5c2a8ad037f5253398ea5ba73.png)
您最近一年使用:0次
2020-01-10更新
|
499次组卷
|
2卷引用:2017年上海市闵行区高三上学期期末教学质量调研(一模)数学试题
名校
4 . 如图,设
是由![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f27b6cbb40ce1dd051fb3ebf00ed13a.png)
个实数组成的
行
列的数表,其中![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37a14c188b1c9d61aa237b137ba18023.png)
表示位于第
行第
列的实数,且
.
定义![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48ac059b1f6b73dbcd9abf90a49abf39.png)
为第s行与第t行的积. 若对于任意
(
),都有
,则称数表
为完美数表.
(Ⅰ)当
时,试写出一个符合条件的完美数表;
(Ⅱ)证明:不存在10行10列的完美数表;
(Ⅲ)设
为
行
列的完美数表,且对于任意的
和
,都有
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f27b6cbb40ce1dd051fb3ebf00ed13a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/855ce769f6795d1463744a0d74901fb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37a14c188b1c9d61aa237b137ba18023.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c78e2c4cb91cccb91ff2e37c03fade62.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/6b8f6e59e136f076b85d013dbc16074d.png)
![]() | ![]() | ![]() | ![]() |
![]() | ![]() | ![]() | ![]() |
![]() | ![]() | ![]() | ![]() |
![]() | ![]() | ![]() | ![]() |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48ac059b1f6b73dbcd9abf90a49abf39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ca8883092e887741fc56afa3cd3e5e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b056a90a2751f04ba5fff3dc5c1d0674.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/579c948359646bfdd6fc9b68328aa068.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d89a75b7011dd230ae34b3ae74b5bee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(Ⅰ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc2d3df37e73a8abea815f37dbb3fff5.png)
(Ⅱ)证明:不存在10行10列的完美数表;
(Ⅲ)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df174b2c9d4a34a1c6aaad09aef70ce6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d796f419d4ef9ba590cb825ebb87cdd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dce0f7763801092311cd98e9a81c0ed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f98f4b3190ce64e23de849cfe2f7ca8f.png)
您最近一年使用:0次
2019-04-11更新
|
931次组卷
|
3卷引用:【区级联考】北京市西城区2019届高三4月统一测试(一模)数学理试题
5 . 已知集合
,
,
.对于数列
,
,且对于任意
,
,有
.记
为数列
的前
项和.
(1)写出
,
的值;
(2)数列
中,对于任意
,存在
,使
,求数列
的通项公式;
(3)数列
中,对于任意
,存在
,有
.求使得
成立的
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7401d52d5f947f91a8ec937f946bf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e88c79efe16f4bc82be360a7f1bcaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee8f1df735a4480e538fd1d067fbd577.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7374d58f2a60d96904b5e902b9fc829.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(1)写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fd71bc7e6668f90f259ad0b06dd60c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7da2f386b78cdf6489efaa2f5820d3e.png)
(2)数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ce0808aca14083c79ab3b29930b57b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c81af791f20dc5522ddc62b2a49a159f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b311784db139326c27b72a3d55e29c31.png)
(3)数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e36bff57bcfa86432b340e25e51d42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0aacf3a2d9067b05db0f9dcd2f79cae5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5941ee3deb659a14f4e69744b6c1fa1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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名校
6 . 【江苏省南京师大附中2018届高三高考考前模拟考试数学试题】已知等差数列{an}和等比数列{bn}均不是常数列,若a1=b1=1,且a1,2a2,4a4成等比数列, 4b2,2b3,b4成等差数列.
(1)求{an}和{bn}的通项公式;
(2)设m,n是正整数,若存在正整数i,j,k(i<j<k),使得ambj,amanbi,anbk成等差数列,求m+n的最小值;
(3)令cn=
,记{cn}的前n项和为Tn,{
}的前n项和为An.若数列{pn}满足p1=c1,且对n≥2, n∈N*,都有pn=
+Ancn,设{pn}的前n项和为Sn,求证:Sn<4+4lnn.
(1)求{an}和{bn}的通项公式;
(2)设m,n是正整数,若存在正整数i,j,k(i<j<k),使得ambj,amanbi,anbk成等差数列,求m+n的最小值;
(3)令cn=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feb8f04838c1533dc2aad1242a9257e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4a6c58cee2ea71527427366047c3c3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4753d52f2922bb12e91dac3c5bc105be.png)
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7 . 数列
是正整数
的任一排列,且同时满足以下两个条件:
;②当
时,
(
).记这样的数列个数为
.
(Ⅰ)写出
的值;
(Ⅱ)证明
不能被4整除.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9304e71a623c4412188a800046a970d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987e30395d91964ebd0395faf2f66600.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c8f93c54dad6360a159db2d17609ede.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dd7b6f92256833e6b9b849db8d4cca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d4fc8faefb26b233d4aa9dbef043aae.png)
(Ⅰ)写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95e565b629c1cde32e9b627ef6b954d4.png)
(Ⅱ)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/338326674cfb0887c21997a738905132.png)
您最近一年使用:0次
2017-11-13更新
|
902次组卷
|
2卷引用:北京市朝阳区2018届高三上学期期中统一考试 数学理
名校
8 . 设数列
的前
项和为
,且满足
,
为常数.
(1)是否存在数列
,使得
?若存在,写出一个满足要求的数列;若不存在,说明理由.
(2)当
时,求证:
.
(3)当
时,求证:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af23c6a5dc8966a7998ccac943b5a7c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(1)是否存在数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/558e11d700481dc414d5d073b4b88a3d.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500d68f2678989a5ce7431cfd51b019d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1c4dc4b221df7046262668b1ca69be.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3cf0f585938ede9eca890a6eb326d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bcfc48f9bc23cc43085bdb910e7a136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da0a13ff95a9397086e6b298dbbb3d5f.png)
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9 . 已知无穷数列
的首项
,
.
(Ⅰ)证明:
;
(Ⅱ) 记
,
为数列
的前
项和,证明:对任意正整数
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ea8d0e50065114b05ef2dc1ea1129cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bfccc2fb1c2478c9bfe0617f03b7363.png)
(Ⅰ)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d784b3a582342a9a36b14546fa560552.png)
(Ⅱ) 记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07cf15e990963e95da59539abdeb33ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8252586f4788c0794d108d5d6ab85335.png)
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名校
10 . 已知数列
的前
项积为
,即
.
(1)若数列
为首项为2016,公比为
的等比数列,
①求
的表达式;②当
为何值时,
取得最大值;
(2)当
时,数列
都有
且
成立,
求证:
为等比数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe229b24e2d56ff6b491725ceae4ff2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb26cd1601fe7e76e1e2dc0b4909324a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3acba98465367138413e694985a3bd64.png)
(1)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe229b24e2d56ff6b491725ceae4ff2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/193eb979c19577a4665aad2308bbc73c.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb26cd1601fe7e76e1e2dc0b4909324a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb26cd1601fe7e76e1e2dc0b4909324a.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2e5c4dfcf22ce3ca3c181d30e72ac89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe229b24e2d56ff6b491725ceae4ff2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14bcf7b4e318f4c6aeb307fff490a20e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e810541c2ced8c5cb05ed6533992310.png)
求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe229b24e2d56ff6b491725ceae4ff2f.png)
您最近一年使用:0次
2017-05-21更新
|
265次组卷
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3卷引用:江苏省泰兴中学2016-2017学年高三12月阶段性检测数学试题