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A sequence is defined by the recursive formula f (n + 1) = f(n) – 2. If f(1) = 18, what is f(5)?
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A sequence is defined by the recursive formula f (n + 1) = f(n) – 2. If f(1) = 18, what is f(5)?

User Freyja
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2 Answers

2 votes

Answer:

real anwser is 10

Explanation:

toom the test

User Stevenll
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1 vote
sub n=1
f(1+1) = f(1)-2 = 18
f(1) = 20
f(2) - f(1) = -2 , d=-2
f(5) = 20+d*(n-1) = 20+(-2)*(5-1) = 20-8 = 12
User Obotezat
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