Question

A sequence is defined recursively using the formula f(n + 1) = –0.5 f(n) . If the first term of the sequence is 120, what is f(5)?

Answer 1

the value of f(n-1)=-0.5

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

Answer 2

f(n+1)=-0.5f(n)Answer is 4