Asked by Micheal
                Find a12 in a geometric series for which a12 = 32 and r= -4
            
            
        Answers
                    Answered by
            oobleck
            
    Hmmm. I'd say a12=32.
Maybe fix your typo and use the usual formula
an = ar^(n-1)
also, I think you meant geometric sequence, not series. The series is the sequence of partial sums,
    
Maybe fix your typo and use the usual formula
an = ar^(n-1)
also, I think you meant geometric sequence, not series. The series is the sequence of partial sums,
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