Asked by Awe
The 2nd term in a geometric sequence is -4 and the 5th term is 32
Answers
Answered by
Damon
a + ar + a r^2 + a r^3 + a r^4
ar = -4
a r^4 = 32
a = -4/r
(-4/r) r^4 = 32
r^3 = -8
so r = -2
and a = 2
ar = -4
a r^4 = 32
a = -4/r
(-4/r) r^4 = 32
r^3 = -8
so r = -2
and a = 2
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