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首页>高中数学综合库>数列>等差数列>等差中项>等差中项的应用
题型:单选题 难度:0.85 引用次数:121 更新时间:2020/3/26 11:11:36 题号:9868523
在各项都是正数的等比数列eqId93e38ecd74a24cb59da79181b95bfd3a中,若eqId90171c734cb448d989e3c49d55b37f4eeqId9f2a788d2a3143e5a88f7214ef4b5d24eqIde21167e5af3f4bfcb19164fa7e5284e9成等差数列,则eqId5a8242f69ddd4276a04fb0763d91bd14的值为(   )
A.9B.6C.3D.1

类题推荐

【推荐1】在等差数列eqId93e38ecd74a24cb59da79181b95bfd3a中,eqId8bf101430ca84c9eb435ae6f92187d14eqId067b8c8f6c384b79b047d2251fda3a7d,则数列eqId93e38ecd74a24cb59da79181b95bfd3a的前9项的和等于(   ).
A.297B.144C.99D.66
更新:2020/03/06难度:0.85题型:单选题组卷:254
【推荐2】设等差数列eqId93e38ecd74a24cb59da79181b95bfd3a的前eqIdf458db68122849abb588feb2e682d9ac项和为eqIddb5481de79c946c0a760143297d5eade,若eqId03258b0daf0946819dd556b501ef78f7,则()
A.eqId5b415ac1b43040d688e94cb7d3b74f0bB.eqIdb215b21bc3f641bd9a41d7ff30db7d27C.eqId29bdefdd76d64f22bc94638be2ae534aD.eqId05a4565876ee4b178105680c598a1063
更新:2019/11/19难度:0.85题型:单选题组卷:133
【推荐3】已知数列eqId93e38ecd74a24cb59da79181b95bfd3a为等差数列,前eqIdf458db68122849abb588feb2e682d9ac项和为eqIddb5481de79c946c0a760143297d5eade,且eqId505581627991459b9d1aaee226c5aa5ceqId95810ddcbe114344a217a6d7e5ac2169(   )
A.eqId15a8fba84a944a18a3081a8227693d57B.eqId149474e84ad84225841eced3061e9d26C.eqIdd6c0e3ca15b3431487f3ef7f69c1d8a5D.eqIdc15d343cecf74172a34fccfff78c1cd7
更新:2020/05/11难度:0.85题型:单选题组卷:410