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题型:解答题 难度:0.65 引用次数:708 更新时间:2020/3/26 11:11:52 题号:3190680
已知等比数列eqId93e38ecd74a24cb59da79181b95bfd3a的前eqIdddd35c5d043e4ebeac32a99367053c68项和eqId2df935d9d0134a9e9c50da381e2e320b,且eqId8948735949d8496b8dd16af5b3d86c98成等差数列.
(Ⅰ)求eqId93e38ecd74a24cb59da79181b95bfd3a的通项公式;
(Ⅱ)设eqIdeeb4ca98872f4e6d91cea28f43fc0b63是首项为eqIdc052ddfbd4524f67a79e0e77c2e5656a,公差为eqId8433a30867ac48f8b3d8940499e2ee8b的等差数列,其前eqIdf458db68122849abb588feb2e682d9ac项和为eqId92ed363a54bd4a8a93df9463bb3af1f5,求满足eqIda94e99b02a5c4ca29ef4a05ee80dde1a的最大正整数eqIdf458db68122849abb588feb2e682d9ac

类题推荐

【推荐1】已知各项都是正数的数列eqId2c1230a9ef5a4968be599681d676dd2b的前eqIdf458db68122849abb588feb2e682d9ac项和为eqIddb5481de79c946c0a760143297d5eade,且eqId902cd87f0f34409fba771609b784a391,数列eqIda0db2906046940e19de8782f94f34137满足eqIdac962c15bc1d4ab3a3365b87668a1af3eqId6b10dd45f591401d8165057c5ca5203b.
(1)求数列eqId2c1230a9ef5a4968be599681d676dd2beqIda0db2906046940e19de8782f94f34137的通项公式;
(2)设数列eqId2f151408c8a146759d59db6f8ebd0e50满足eqId1518c03dd83e4b1bb4195076e8f3e47d,求和eqId6f6534a6d6c24c338384e912c4967feb
(3)是否存在正整数eqId0c243e5dded24989821daf9bef2676a6eqIda5d0fc594d4048549d5bbda484fbecc8eqId1ebd0c7378384c15879a09d26040459e,使得eqIdb1bc3fc7d35f4d89a2cf326f35199f0deqIdecd3108102de4980b7efa6809b485921eqIdf740b898eb024eb5b408774bb7ab6399成等差数列?若存在,求出所有满足要求的eqId0c243e5dded24989821daf9bef2676a6eqIda5d0fc594d4048549d5bbda484fbecc8eqIdd9026ce1966847eb86a5e13345fed583,若不存在,说明理由.
更新:2020/01/11难度:0.65题型:解答题组卷:500
【推荐2】已知正项数列eqId93e38ecd74a24cb59da79181b95bfd3a满足eqIda6c6938b4c3c4b5d8a09736edca537f9,记数列eqId93e38ecd74a24cb59da79181b95bfd3aeqIdf458db68122849abb588feb2e682d9ac项和eqIddb5481de79c946c0a760143297d5eadeeqId9f87f3bb373942708f0b573b80c56ecf,其中eqId14e9a04c28644d9181a88e51e895fb1e.
(1)求数列eqId93e38ecd74a24cb59da79181b95bfd3a的通项公式;
(2)若eqId43aeb66d522c4bff8db4bc87a8c0f9af,数列eqIdeeb4ca98872f4e6d91cea28f43fc0b63的前eqIdf458db68122849abb588feb2e682d9ac项和为eqId92ed363a54bd4a8a93df9463bb3af1f5,若eqId6bc55eed07054d44898d6dec5d600b26恒成立,求实数eqId3a4208e0040c42ed8b09de2cae9d562e的取值范围.
更新:2019/11/11难度:0.65题型:解答题组卷:712
【推荐3】数列eqId93e38ecd74a24cb59da79181b95bfd3a满足eqId77b3f6b9955e499dbdab033a38779496eqId977d9549f8d9482eb985e6583d97298c,……,eqId4f679e0cbae44887b1338dd8db1a0c17
(1)求eqId0509add794484602a2c710f41d9ddddceqId5cae532f2168495188622189ec8df62ceqId310274b5ffe34ad58a069683d0dac787eqIdd80748a60dc04eb5bc4556d4e5cad370的值;
(2)求eqIdef9cef8e6d054d8dac46b8cde14953adeqId65b91e04dc224c538cc08812e69e46a7之间的关系式eqId91684aaa4b7546628c207078ef178869
(3)求证:eqId8fdd39f74fcd4e42905d1d6c1358474f
更新:2018/11/16难度:0.65题型:解答题组卷:371