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QueenGinger
QueenGinger QueenGinger
  • 13-09-2015
  • Mathematics
Answered

If f(1) = 160 and f(n + 1) = –2f(n), what is f(4)?

Verified Answer :

jason2020158
jason2020158 jason2020158
  • 13-09-2015

f4 can be rewritten to:

f(4) = f(3+1) = -2f(3)    [Using f(n+1) = -2f(n)]

Keep using f(n+1):

-2f(3) = -2f(2+1) = -2[-2f(2)] = 4f(2)

Again:

4f(2) = 4f(1+1) = 4[-2f(1)] = -8f(1) = -8160

-8160 = -1280

Answer Link
kajj kajj
  • 16-04-2020

Answer:

-1,280

Step-by-step explanation:

Answer Link

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