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If I know a5 = -48 and r = 2 in a geometric sequence, how do i find the 8th term and explicit formula? How can I calculate a1?
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Jan 18, 2018
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If I know a5 = -48 and r = 2 in a geometric sequence, how do i find the 8th term and explicit formula? How can I calculate a1?
Mathematics
high-school
Tushar Goswami
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Data:
a5 = - 48
Being r = q = 2
a1 = ?
a8 = ?
n (
Number of terms)
Solving:
Formula (
geometric progression)
We have:
find the 1th (a1)
find the 8th (a8)
Answer:
Kamusett
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Jan 22, 2018
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Kamusett
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