Question

1. Show work Let a be the sequences defined by an = ( – 2 )^(n+1)...

1. Show work
Let a be the sequences defined by
an = ( – 2 )^(n+1)
a. Which term is greater, a 7, or a 8

b. Given any 2 consecutive terms, how can you
tell which one will yield the greater term of
the sequence ?

Math   Precalculus   
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Answer #1

suppose consider there are two consecutive numbers a8 and a9. Here a9 is greater because it is in odds place. Consider a9 and a10. Here also a9 is greater because it is in odds place. The numbers in odds place are always positive wheras numbers in even place are always negative.

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