warmachiner0x305 warmachiner0x305

07-05-2020
Mathematics

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Find the 12th term of the geometric sequence 1,−2,4

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Chelboy Chelboy

10-05-2020

Answer:-2048

Step-by-step explanation:

First term(a)=1

Common ratio(r)=-2/1 or 4/-2

Common ratio(r)=-2

nth term=a x r^(n-1)

12th term=1 x (-2)^(12-1)

12th term=1 x (-2)^11

12th term=(-2)^11

12th term=-2048

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