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Mathematics 24 Online
OpenStudy (anonymous):

Find the first six terms of the sequence. a1 = -3, an = 2 ● an-1

OpenStudy (anonymous):

@Mertsj

OpenStudy (jskhupmang):

do you know what sequence it is arithmetic or geometric?

OpenStudy (jskhupmang):

nvm

OpenStudy (mertsj):

do you mean: \[a _{n}=2(a _{n-1})\]

OpenStudy (anonymous):

yes @Mertsj

OpenStudy (mertsj):

So that means if you want the second term, you should multiply the first term by 2

OpenStudy (mertsj):

In other words: \[a _{2}=2a _{2-1}=2a _{1}\]

OpenStudy (anonymous):

so the first term is -3??? @Mertsj

OpenStudy (mertsj):

The problem says that the first term is -3, yes.

OpenStudy (anonymous):

ok...so from there i just need to add 2 to each new term??

OpenStudy (mertsj):

ADD?????

OpenStudy (anonymous):

multiply....sorry *embarrassed*

OpenStudy (mertsj):

Yes. Multiply. So we have -3, -6, -12, ...

OpenStudy (anonymous):

Yes that is one of my choices....Thanks for your help!! :)

OpenStudy (mertsj):

yw

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