Question

Please help! I think I know the answer but I'm not sure

Answer 1

Find f(5) for this sequence:

f(1) = 2 and f(2) = 5, f(n) = f(1) + f(2) + f(n - 1), for n > 2.

f(5) = ______


I think it is 13

Answer 2

\[\large a_n = a_1 + (n-1)d\]
\[\large a_5 = 2 + ( 5 - 1) 3\]
\[\large a_5 = 14\]

Answer 3

Why is it a and d instead of f and n? @shamil98

Answer 4

it's just a variable

Answer 5

d = difference of terms

Answer 6

Okay Thanks for the help :)

Answer 7

mhm.