Question

will fan and medal !!
a sequence is defined recursively using the formula f(n+1)=-0.5f(n). if the first term of the sequence is 120, what is f(5) ?

Answer 1

start with putting n=1

Answer 2

it will gove u f(2)

Answer 3

*give

Answer 4

I don't know how to do this at all , im just lookin for the answer so I can pass this test lol

Answer 5

n=1 gives-\[f(1+1)=-0.5f(1)\\f(2)=-0.5*120\]
geting this?

Answer 6

noo lol

Answer 7

so f(2)=-60 ok?

Answer 8

lol can I have just the answer ?

Answer 9

keep doing this next put n=2
\[f(2+1)=-0.5*f(2)=-0.5*-60=30\\f(3)=30\]

Answer 10

next, put n=3\[f(4)=-0.5f*(3)=-0.5*30=-15\]
and finally put n=4
\[f(5)=-0.5*f(4)=7.5\]
so f(5)=7.5

Answer 11

thats ur answer

Answer 12

thank youuuu !

Answer 13

yw!!