Question 656507
What are the next three termsand describe the pattern?
-1, 2, -4, 8
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1st: -1
2nd: -1*-2 = 2
3rd: 2*-2 = -4
4th: -4*-2 = 8
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Pattern:
a(1) = -1
--
a(n) = -2*a(n-1) for n = 2,3,4....
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Cheers,
Stan H.
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