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等差數(shù)列知識(shí)點(diǎn)基礎(chǔ)練習(xí)題-文庫(kù)吧資料

2024-10-23 23:52本頁(yè)面
  

【正文】 數(shù)列公差是3,第23 項(xiàng)是89,332是這個(gè)數(shù)列的第________項(xiàng)。6一個(gè)遞減的等差數(shù)列公差是4,第65 項(xiàng)是 312,首項(xiàng)是________。6一個(gè)遞減的等差數(shù)列公差是4,首項(xiàng)是529,第91項(xiàng)是________。6一個(gè)遞減的等差數(shù)列公差是3,第91 項(xiàng)是 336,第23項(xiàng)是________。6一個(gè)遞減的等差數(shù)列公差是3,第34 項(xiàng)是 923,第91項(xiàng)是________。6一個(gè)遞增的等差數(shù)列公差是4,第65 項(xiàng)是579,首項(xiàng)是________。5一個(gè)遞增的等差數(shù)列公差是4,首項(xiàng)是9,第91項(xiàng)是________。5一個(gè)遞增的等差數(shù)列公差是3,第91 項(xiàng)是 336,第23項(xiàng)是________。5一個(gè)遞增的等差數(shù)列公差是3,第34 項(xiàng)是 123,第91項(xiàng)是________。5一個(gè)遞減(后項(xiàng)比前項(xiàng)小)的等差數(shù)列公差是6,有一項(xiàng)比第59 項(xiàng)小 84,這一項(xiàng)比第59 項(xiàng)________(多或少)________個(gè)公差,這一項(xiàng)是第________項(xiàng)。5一個(gè)遞減(后項(xiàng)比前項(xiàng)小)的等差數(shù)列公差是8,有一項(xiàng)比第74項(xiàng)小96,這一項(xiàng)比第74項(xiàng)________(多或少)________個(gè)公差,這一項(xiàng)是第________項(xiàng)。4一個(gè)遞增(后項(xiàng)比前項(xiàng)大)的等差數(shù)列公差是5,有一項(xiàng)比首項(xiàng)大70,這一項(xiàng)比首項(xiàng)________(多或少)________個(gè)公差,這一項(xiàng)是第________項(xiàng)。4一個(gè)遞增(后項(xiàng)比前項(xiàng)大)的等差數(shù)列公差是5,有一項(xiàng)比第46項(xiàng)大60,這一項(xiàng)比第46項(xiàng)________(多或少)________個(gè)公差,這一項(xiàng)是第________項(xiàng)。4一個(gè)遞增(后項(xiàng)比前項(xiàng)大)的等差數(shù)列公差是3,有一項(xiàng)比第34項(xiàng)大57,這一項(xiàng)比第34項(xiàng)________(多或少)________個(gè)公差,這一項(xiàng)是第________項(xiàng)。4一個(gè)遞減(后項(xiàng)比前項(xiàng)小)的等差數(shù)列公差是9,第23 項(xiàng)比首項(xiàng)________(多或少)______。4一個(gè)遞減(后項(xiàng)比前項(xiàng)小)的等差數(shù)列公差是8,第 29 項(xiàng)比第86 項(xiàng)________(多或少)______。3一個(gè)遞減(后項(xiàng)比前項(xiàng)小)的等差數(shù)列公差是3,第 74 項(xiàng)比第26項(xiàng)________(多或少)______。3一個(gè)遞減(后項(xiàng)比前項(xiàng)小)的等差數(shù)列公差是9,第 18 項(xiàng)比第32 項(xiàng)________(多或少)______。3一個(gè)遞增(后項(xiàng)比前項(xiàng)大)的等差數(shù)列公差是8,首項(xiàng)比第73 項(xiàng)________(多或少)______。3一個(gè)遞增(后項(xiàng)比前項(xiàng)大)的等差數(shù)列公差是7,第28 項(xiàng)比第73項(xiàng)________(多或少)______。3一個(gè)遞增(后項(xiàng)比前項(xiàng)大)的等差數(shù)列公差是5,第55項(xiàng)比第37項(xiàng)________(多或少)______。2一個(gè)遞增(后項(xiàng)比前項(xiàng)大)的等差數(shù)列公差是3,第 28 項(xiàng)比第53項(xiàng)________(多或少)______。2一個(gè)遞減(后項(xiàng)比前項(xiàng)小)的等差數(shù)列,比第67 項(xiàng)多28 個(gè)公差是第________項(xiàng)。2一個(gè)遞減(后項(xiàng)比前項(xiàng)小)的等差數(shù)列,第________項(xiàng)比首項(xiàng)少 17 個(gè)公差。2一個(gè)遞減(后項(xiàng)比前項(xiàng)小)的等差數(shù)列,第________項(xiàng)比第58項(xiàng)多17個(gè)公差。2一個(gè)遞增(后項(xiàng)比前項(xiàng)大)的等差數(shù)列,比第92 項(xiàng)多 19 個(gè)公差是第________項(xiàng)。1一個(gè)遞增(后項(xiàng)比前項(xiàng)大)的等差數(shù)列,第________項(xiàng)比首項(xiàng)多19個(gè)公差。1一個(gè)遞增(后項(xiàng)比前項(xiàng)大)的等差數(shù)列,第________項(xiàng)比第75項(xiàng)多19 個(gè)公差。1一個(gè)遞減(后項(xiàng)比前項(xiàng)小)的等差數(shù)列,首項(xiàng)比第76 項(xiàng)________(多或少)______個(gè)公差。1一個(gè)遞減(后項(xiàng)比前項(xiàng)小)的等差數(shù)列,第29項(xiàng)比第 86 項(xiàng)________(多或少)______個(gè)公差。1一個(gè)遞減(后項(xiàng)比前項(xiàng)小)的等差數(shù)列,第74項(xiàng)比第26項(xiàng)________(多或少)______個(gè)公差。一個(gè)遞減(后項(xiàng)比前項(xiàng)小)的等差數(shù)列,第18項(xiàng)比第 32 項(xiàng)________(多或少)______個(gè)公差。一個(gè)遞增(后項(xiàng)比前項(xiàng)大)的等差數(shù)列,首項(xiàng)比第73 項(xiàng)________(多或少)______個(gè)公差。一個(gè)遞增(后項(xiàng)比前項(xiàng)大)的等差數(shù)列,第28項(xiàng)比第73項(xiàng)________(多或少)______個(gè)公差。一個(gè)遞增(后項(xiàng)比前項(xiàng)大)的等差數(shù)列,第55 項(xiàng)比第37 項(xiàng)________(多或少)______個(gè)公差。已知,第三篇:等差數(shù)列基礎(chǔ)練習(xí)題一個(gè)遞增(后項(xiàng)比前項(xiàng)大)的等差數(shù)列,第28項(xiàng)比第 53項(xiàng)________(多或少)______個(gè)公差。的值。(2)的項(xiàng)?若是,是第設(shè)等差數(shù)列與的前項(xiàng)之和分別為,且,求的值。在等比數(shù)列值范圍。則=60,則=_ 11)=________。的解,則=________。在等比數(shù)列(1)若(3)若(5)若(6)若(7)設(shè)那么(9)設(shè)(10)若=48,=________2)若,則=__4)若,則,則=________。(9)若是方程,且的解,則是關(guān)于的方程=________。則=________。N*,且m60}中元素的個(gè)數(shù),并求這些元素的和{an}的前n項(xiàng)和公式是Sn=5n2+3n,求它的前3項(xiàng),并求它的通項(xiàng)公式{an}的前4項(xiàng)的和是2,前9項(xiàng)的和是6,求其前n項(xiàng)和的公式。,求相應(yīng)的等差數(shù)列{an}的有關(guān)未知數(shù):51a1=,d=,Sn=5,66(1)求n 及an;(2)d=2,n=15,an=10,求a1及Sn第二篇:等差數(shù)列基礎(chǔ)練習(xí)題等差數(shù)列二、選擇題xxlg2,lg(21),lg(2+3)成等差數(shù)列,則x的值等于()1若 等差數(shù)列中連續(xù)四項(xiàng)為a,x,b,2x,那么 a :b 等于()A、B、C、或 1 D、{an}中a3+a11=40,則a4
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