SOLUTION: write the first four terms of the sequence a1=-3, an=(-2)an-1;n=2,3,4,... How do I do this problem? Is the answer -3,-5,-7,-9 or did I do it wrong? Thank you.

Algebra ->  Sequences-and-series -> SOLUTION: write the first four terms of the sequence a1=-3, an=(-2)an-1;n=2,3,4,... How do I do this problem? Is the answer -3,-5,-7,-9 or did I do it wrong? Thank you.      Log On


   

Question 38029: write the first four terms of the sequence a1=-3, an=(-2)an-1;n=2,3,4,... How do I do this problem?
Is the answer -3,-5,-7,-9 or did I do it wrong? Thank you.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
write the first four terms of the sequence a1=-3, an=(-2)an-1;n=2,3,4,... How do I do this problem?
Is the answer -3,-5,-7,-9 or did I do it wrong?
a(n)=-2[a(n-1)]
a(1)=-3
a(2)=-2(-3)=6
a(3)=-2(6)=-12
a(4)=-2(-12)=24
Cheers,
Stan H.