摘要:又正数.则必有.
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在数列中,若都有(为常数),则称为“等方差数列”.下列是对“等方差数列”的判断,正确命题序号为 .
(1)若数列是等方差数列,则数列是等差数列;
(2)数列是等方差数列;
(3)若数列既是等方差数列,又是等差数列,则该数列必为常数列;
(4)若数列是等方差数列,则数列(为常数,也是等方差数列.
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在数列中,若都有(为常数),则称为“等方差数列”.下列是对“等方差数列”的判断,正确命题序号为 .
(1)若数列是等方差数列,则数列是等差数列;
(2)数列是等方差数列;
(3)若数列既是等方差数列,又是等差数列,则该数列必为常数列;
(4)若数列是等方差数列,则数列(为常数,也是等方差数列.
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在数列中,若都有(为常数),则称为“等方差数列”.下列是对“等方差数列”的判断:
(1)若数列是等方差数列,则数列是等差数列;
(2)数列是等方差数列;
(3)若数列既是等方差数列,又是等差数列,则该数列必为常数列;
(4)若数列是等方差数列,则数列(为常数,也是等方差数列.
则正确命题序号为 .
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