单项选择题

If a₁，a₂，a₃，…a_n…is a sequence such that a₁=-2 and a_n+1 is the reciprocal of the square of a_n for all n≥1，what is the value of a₄（）

A.A
B.B
C.C
D.D
E.E

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热门试题

单项选择题

A. 3
B. 3.5
C. 4
D. 4.5
E. It cannot be determined from the information given．

单项选择题

A. 24
B. 30
C. 60
D. 96
E. 120

If a1，a2，a3，…an…is a sequence such that a1=-2 and an+1 is the reciprocal of the square of an for all n≥1，what is the value of a4（）