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If f(1) = 1 and f(n) = f(n-1)2 – 4 then find the value of f(4).

If f(1) = 1 and f(n) = f(n-1)2 – 4 then find the value of f(4).
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If f(1) = 1 and f(n) = f(n-1)2 – 4 then find the value of f(4).

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User Cicero
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1 Answer

13 votes
f(1) = 2

f(2) = -5f(2-1) = -5f(1) = -5(2) = -10

f(3) = -5f(3-1) = -5f(2) = -5(-10) = 50

So, f(4) = ?
answered
User Hschne
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9.0k points
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