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OpenStudy (anonymous):
The following is a geometric sequence. 1, -2, 4, -8, 16,…
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hartnn (hartnn):
n'th term or sum ?
OpenStudy (anonymous):
True or false
OpenStudy (harsha19111999):
True
hartnn (hartnn):
lol ok find the ratio between each consecutive terms if that ratio is same always, then it is a geometric sequence
hartnn (hartnn):
is -2/1 = 4/-2 = -8/4 = 16/-8 ?? are all those ratios equal ?
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hartnn (hartnn):
so you understood, why it is a geometric sequence ?
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