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Anonymous Anonymous
  • 08-03-2017
  • Mathematics
Answered

consider the following geometric sequence

-5,10,-20,40

if the explicit formula for the sequence above is expressed in the form an=b*c^n-1, determine the values pf b and c


b=

c=

Verified Answer :

ghanami
ghanami ghanami
  • 12-05-2017

hello :
an=b*c^n-1,        b ; the first term      c : common ratio 
b=-5   c=40/-20=-20/10 = 10/-5 = -2

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