So If f (1)=2 and f(n)= f (n-1) -5 then what would be the value of f(6)?

Question

f(1)=2 and f(n)=f(n-1) -5 what would be the value of f(6)

 

 

Answer 1

Hi, Wise.

So if f(1) = 2 and f(n) = f(n-1) - 5

 

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

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

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

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

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