在數(shù)列中.都有(為常數(shù)).則稱(chēng)為“等方差數(shù)列 .下列是對(duì)“等方差數(shù)列 的判斷: (1)數(shù)列是等方差數(shù)列, (2)數(shù)列是等方差數(shù)列.則數(shù)列也是等方差數(shù)列, (3)若數(shù)列既是等方差數(shù)列.又是等差數(shù)列.則該數(shù)列必為常數(shù)列, (4)若數(shù)列是等方差數(shù)列.則數(shù)列(為常數(shù).也是等方差數(shù)列. 則正確命題序號(hào)為 . 查看更多

 

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在數(shù)列{an}中,若都有a-a=p(n≥2,n∈N*)(p為常數(shù)),則稱(chēng){an}為“等方差數(shù)列”.下列是對(duì)“等方差數(shù)列”的判斷:

(1)若數(shù)列{an}是等方差數(shù)列,則數(shù)列{a}是等差數(shù)列;

(2)數(shù)列{(-1)n}是等方差數(shù)列;

(3)若數(shù)列{an}既是等方差數(shù)列,又是等差數(shù)列,則該數(shù)列必為常數(shù)列;

(4)若數(shù)列{an}是等方差數(shù)列,則數(shù)列{akn}(k為常數(shù),k∈N*)也是等方差數(shù)列.

則正確命題序號(hào)為________

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在數(shù)列中,都有為常數(shù)),則稱(chēng)為“等方差數(shù)列”。下列是對(duì)“等方差數(shù)列”的判斷;
(1)數(shù)列是等方差數(shù)列,則數(shù)列是等差數(shù)列;
(2)數(shù)列是等方差數(shù)列;
(3)若數(shù)列既是等方差數(shù)列,又是等差數(shù)列,則該數(shù)列必為常數(shù)列;
(4)若數(shù)列是等方差數(shù)列,則數(shù)列為常數(shù),也是等方差數(shù)列,則正確命題序號(hào)為            

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在數(shù)列中,都有為常數(shù)),則稱(chēng)為“等方差數(shù)列”。下列是對(duì)“等方差數(shù)列”的判斷;

(1)數(shù)列是等方差數(shù)列,則數(shù)列是等差數(shù)列;

(2)數(shù)列是等方差數(shù)列;

(3)若數(shù)列既是等方差數(shù)列,又是等差數(shù)列,則該數(shù)列必為常數(shù)列;

(4)若數(shù)列是等方差數(shù)列,則數(shù)列為常數(shù),也是等方差數(shù)列,則正確命題序號(hào)為             

 

 

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在數(shù)列中,若都有為常數(shù)),則稱(chēng)為“等方差數(shù)列”.下列是對(duì)“等方差數(shù)列”的判斷:

(1)若數(shù)列是等方差數(shù)列,則數(shù)列是等差數(shù)列;

(2)數(shù)列是等方差數(shù)列;

(3)若數(shù)列既是等方差數(shù)列,又是等差數(shù)列,則該數(shù)列必為常數(shù)列;

(4)若數(shù)列是等方差數(shù)列,則數(shù)列為常數(shù),也是等方差數(shù)列.

則正確命題序號(hào)為                 .

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在數(shù)列中,若都有為常數(shù)),則稱(chēng)為“等方差數(shù)列”.下列是對(duì)“等方差數(shù)列”的判斷,正確命題序號(hào)為                 .

(1)若數(shù)列是等方差數(shù)列,則數(shù)列是等差數(shù)列;

(2)數(shù)列是等方差數(shù)列;

(3)若數(shù)列既是等方差數(shù)列,又是等差數(shù)列,則該數(shù)列必為常數(shù)列;

(4)若數(shù)列是等方差數(shù)列,則數(shù)列為常數(shù),也是等方差數(shù)列.

 

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