Question

f(1) = 2 and f(2) = 3, f(n) = f(1) + f(2) + f(n - 1), for n > 2.

f(5) = ______

Answer 1

I got 5 + f(4)

Answer 2

How'd you get your answer?

Answer 3

Substitute n=5 in the equation f(n)=f(1) +f(2)+f(5-1)

Answer 4

We already know what f(1) and f(2) are.. Is it right?

Answer 5

Ohhh ok! I get it now! Thank you so much! :)

Answer 6

No problem!! :) Best of luck!!

Answer 7

thats not correct, we can get a numerical answer for this

Answer 8

start by finding f(3)

Answer 9

How?

Answer 10

Oh yeah! That's true!!

Answer 11

Substitute f(3) in the equation I showed you. where n=3.

Answer 12

to get f(3), just replace every 'n' by 3
in
f(n) = f(1) + f(2) + f(n - 1)

Answer 13

Ohhhh.

Answer 14

so what u get f(3) as ?

Answer 15

I got 5.. I don't think it's right...

Answer 16

how did u get 5 ?

Answer 17

f(n) = f(1) + f(2) + f(n - 1)

f(3) = f(1)+f(2)+f(2)
you know all values on right

Answer 18

f(3)= 2+3+3=8 and use this to find f(4) the same way as hartnn mentioned
f|(4)=f(1)+f(2)+f(3) and finally use it again to find f(5)