If F(n) = F(n-1) + (n-1)
F(5) = 11
What is F(1)?
4 answers
Math help needed.
Use the recursion relation that they gave you, backwards.
F(n-1) = F(n)-(n-1)
Let n = 5 for starters
F(4) = F(5) -4 = 7
Now let n = 4
F(3) = F(4) -3 = 4
Coininuing in this manner,
F(2) = F(3) -2 = 2
F(1) = F(2) -1 = 1
F(n-1) = F(n)-(n-1)
Let n = 5 for starters
F(4) = F(5) -4 = 7
Now let n = 4
F(3) = F(4) -3 = 4
Coininuing in this manner,
F(2) = F(3) -2 = 2
F(1) = F(2) -1 = 1
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