ashworld ashworld
  • 12-06-2018
  • Mathematics
contestada

write an explicit rule for the geometric sequence 4, 8, 16, 32, ..

Respuesta :

altavistard
altavistard altavistard
  • 12-06-2018
First term:  a(1) = 4; common ratio:  r = 2

Then:

a(n) = 4(2)^(n-1)

Check:  Predict the 4th term using this formula:

a(4) = 4(2)^3 = 4(8) = 32  (correct)
Answer Link
JamesBondAgent007 JamesBondAgent007
  • 12-06-2018
8÷4=2
16÷8=2
32÷16=2
multiply by 2
Answer Link

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