If f (1) = 2 and f (n) = f (n-1) - 5, then what is f (6)

Question

Mathematics

Maddison Lynch

5 July, 08:40

If f (1) = 2 and f (n) = f (n-1) - 5, then what is f (6)

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Brody Combs · Answer 1

f (n) = f (n - 1) - 5

f (1) = 2

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

f (3) = f (3 - 1) - 5 = f (2) - 5 = - 3 - 5 = - 8

f (4) = f (4 - 1) - 5 = f (3) - 5 = - 8 - 5 = - 13

f (5) = f (5 - 1) - 5 = f (4) - 5 = - 13 - 5 = - 18

f (6) = f (6 - 1) - 5 = f (5) - 5 = - 18 - 5 = - 23