数列an,bn满足an>0,bn=1/n(log2a1+log2a2+…log2an)若{an}是等比数列,求证:{bn}是等差数列若{an}是以a1=1024为首项,公比q=1/2的等比数列,则n为何值时,数列bn的前n项和sn最大?并求最大值bn是n分之1
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/28 04:54:36
![数列an,bn满足an>0,bn=1/n(log2a1+log2a2+…log2an)若{an}是等比数列,求证:{bn}是等差数列若{an}是以a1=1024为首项,公比q=1/2的等比数列,则n为何值时,数列bn的前n项和sn最大?并求最大值bn是n分之1](/uploads/image/z/7856687-47-7.jpg?t=%E6%95%B0%E5%88%97an%2Cbn%E6%BB%A1%E8%B6%B3an%3E0%2Cbn%3D1%2Fn%28log2a1%2Blog2a2%2B%E2%80%A6log2an%29%E8%8B%A5%EF%BD%9Ban%EF%BD%9D%E6%98%AF%E7%AD%89%E6%AF%94%E6%95%B0%E5%88%97%2C%E6%B1%82%E8%AF%81%EF%BC%9A%EF%BD%9Bbn%EF%BD%9D%E6%98%AF%E7%AD%89%E5%B7%AE%E6%95%B0%E5%88%97%E8%8B%A5%EF%BD%9Ban%EF%BD%9D%E6%98%AF%E4%BB%A5a1%3D1024%E4%B8%BA%E9%A6%96%E9%A1%B9%2C%E5%85%AC%E6%AF%94q%3D1%2F2%E7%9A%84%E7%AD%89%E6%AF%94%E6%95%B0%E5%88%97%2C%E5%88%99n%E4%B8%BA%E4%BD%95%E5%80%BC%E6%97%B6%2C%E6%95%B0%E5%88%97bn%E7%9A%84%E5%89%8Dn%E9%A1%B9%E5%92%8Csn%E6%9C%80%E5%A4%A7%3F%E5%B9%B6%E6%B1%82%E6%9C%80%E5%A4%A7%E5%80%BCbn%E6%98%AFn%E5%88%86%E4%B9%8B1)
xSn@TrGdYiaiABHiy%JЇ]RD&q;3viDĆ=>F^֞r8~xRe.ZVsJKߛ':B;lzן)TNl,'B >¼42߉Gf'of|~NVi ~llE"]ٌa!QrgkæxzW4y!mlk-?ABv'GCdQ+ߚֽ8ZIB5Gt'y23\ΞNնI^g$$#v