Help please!! I'm lost on how to do this.
A recursive function is shown below:
F(1)=2 and f(n)=f(n-1)-5; n1
Which of the following lists the terms in the sequence defined by this recursive function?
A)2,3,8,13,18...
B)2,7,12,17,22...
C)2,-3,-8,-13,-18...
D)2,-7,-12,-17,-22...

Question

Help please!! I'm lost on how to do this.
A recursive function is shown below:
F(1)=2 and f(n)=f(n-1)-5; n>1
Which of the following lists the terms in the sequence defined by this recursive function?
A)2,3,8,13,18...
B)2,7,12,17,22...
C)2,-3,-8,-13,-18...
D)2,-7,-12,-17,-22...

anonymous · Answer

clearly first term is 2
next term will be 2 -5 =-3 
and third term will be -3-5=-8
and so on...

anonymous · Answer

Do you mind showing me how to do that with the formula? Thx so much for the help

jim_thompson5910 · Answer

f(n)=f(n-1)-5 means "to find the next term, you take the last term and subtract 5"


f(n) = nth term
f(n-1) is the term just before the nth term

anonymous · Answer

Oh thanks! I didn't know about the last term.