題目列表(包括答案和解析)
A.該數(shù)列的奇數(shù)項(xiàng)a1,a3,a5,…成等比數(shù)列,偶數(shù)項(xiàng)a2,a4,a6,…成等差數(shù)列
B.該數(shù)列的奇數(shù)項(xiàng)a1,a3,a5,…成等差數(shù)列,偶數(shù)項(xiàng)a2,a4,a6,…成等比數(shù)列
C.該數(shù)列的奇數(shù)項(xiàng)a1,a3,a5,…分別加4后構(gòu)成一個(gè)公比為2的等比數(shù)列
D.該數(shù)列的偶數(shù)項(xiàng)a2,a4,a6,…分別加4后構(gòu)成一個(gè)公比為2的等比數(shù)列
如果數(shù)列滿足:首項(xiàng)那么下列說(shuō)法中正確的是
A.該數(shù)列的奇數(shù)項(xiàng)成等比數(shù)列,偶數(shù)項(xiàng)成等差數(shù)列
B.該數(shù)列的奇數(shù)項(xiàng)成等差數(shù)列,偶數(shù)項(xiàng)成等比數(shù)列
C.該數(shù)列的奇數(shù)項(xiàng)分別加4后構(gòu)成一個(gè)公比為2的等比數(shù)列
D.該數(shù)列的偶數(shù)項(xiàng)分別加4后構(gòu)成一個(gè)公比為2的等比數(shù)列
如果數(shù)列滿足:首項(xiàng)那么下列說(shuō)法中正確的是
A.該數(shù)列的奇數(shù)項(xiàng)成等比數(shù)列,偶數(shù)項(xiàng)成等差數(shù)列
B.該數(shù)列的奇數(shù)項(xiàng)成等差數(shù)列,偶數(shù)項(xiàng)成等比數(shù)列
C.該數(shù)列的奇數(shù)項(xiàng)分別加4后構(gòu)成一個(gè)公比為2的等比數(shù)列
D.該數(shù)列的偶數(shù)項(xiàng)分別加4后構(gòu)成一個(gè)公比為2的等比數(shù)列
如果數(shù)列{an}滿足:首項(xiàng)a1=1且那么下列說(shuō)法中正確的是
A.該數(shù)列的奇數(shù)項(xiàng)a1,a3,a5,…成等比數(shù)列,偶數(shù)項(xiàng)a2,a4,a6,…成等差數(shù)列
B.該數(shù)列的奇數(shù)項(xiàng)a1,a3,a5,…成等差數(shù)列,偶數(shù)項(xiàng)a2,a4,a6,…成等比數(shù)列
C.該數(shù)列的奇數(shù)項(xiàng)a1,a3,a5,…分別加4后構(gòu)成一個(gè)公比為2的等比數(shù)列
D.該數(shù)列的偶數(shù)項(xiàng)a2,a4,a6,…分別加4后構(gòu)成一個(gè)公比為2的等比數(shù)列
如果數(shù)列{an}滿足:首項(xiàng)a1=1,那么下列說(shuō)法中正確的是
A.該數(shù)列的奇數(shù)項(xiàng)a1,a3,a5,…成等比數(shù)列,偶數(shù)項(xiàng)a2,a4,a6,…成等差數(shù)列
B.該數(shù)列的奇數(shù)項(xiàng)a1,a3,a5,…成等差數(shù)列,偶數(shù)項(xiàng)a2,a4,a6,…成等比數(shù)列
C.該數(shù)列的奇數(shù)項(xiàng)a1,a3,a5,…分別加4后構(gòu)成一個(gè)公比為2的等比數(shù)列
D.該數(shù)列的偶數(shù)項(xiàng)a2,a4,a6,…分別加4后構(gòu)成一個(gè)公比為2的等比數(shù)列
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