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

User Martijn Arts
by
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2 Answers

2 votes

Answer:

-1,280

Explanation:

User Damianodamiano
by
8.5k points
5 votes


f(1) = 160

f(2) = f(1+1) = -2f(1)

f(3) = f(2+1)= - 2f(2) = (-2)·(-2)f(1) = 4f(1)

f(4) = f(3+1) = -2f(3) = -2·4f(1) = -8f(1) = - 8·160 =


User Rakesh Chaudhari
by
8.5k points
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