SOLUTION: find the common ratio, explicit formula, and the recursive formula a4 = -1/4 and a1 = 2

Question 1181078: find the common ratio, explicit formula, and the recursive formula
a4 = -1/4 and a1 = 2
Answer by ikleyn(52798) (Show Source): You can put this solution on YOUR website!
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find the common ratio, explicit formula, and the recursive formula
a4 = -1/4 and a1 = 2
~~~~~~~~~~~~~~~~

     = 


     = 


     =  = 


    r =  = .    (the common ratio).             ANSWER


Recursive formula   = .                    ANSWER


Explicit formula    =  = .     ANSWER

Solved.

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