Question

MEDALS FOR BEST ANSWERS.
Find f(5) for this sequence
f(1) = 2 and f(2) = 3, f(n) = f(1) + f(2) + f(n - 1), for n > 2.
f(5) =

Answer 1

f(n) = f(1) + f(2) + f(n - 1), for n > 2
Substitute f(1) + f(2) into the formula first
f(n) = 2 + 3 + f(n - 1)
f(n) = 5 + f(n - 1) for n > 2
Put n = 3
f(3) = 5 + f(3 - 1) = 5 + f(2) = 5 + 3 = 8
f(4) = ?
f(5) = ?

Answer 2

find f(3)=f(1)+f(2)+f(3-1)=2+3+3=8
similarly we can put n =4 than n=5 to find f(5)

Answer 3

so what will it be

Answer 4

f(4)=f(1)+f(2)+f(4-1)=2+3+8=13
so f(5)=? do it like i found f(5)

Answer 5

i don't get it at all that's why i had to ask

Answer 6

ok but that should have been enough i will find it for u
f(5)=f(1)+f(2) +f(4)=2+3+13=18

Answer 7

thank you:)