SOLUTION: Is the formula {{{ a[n]=-4n(n-1) }}} explicit or recursive? Find the first five terms of the sequence. a. recursive; 1, -4, 16, -64, 256 b. recursive; 0, -16, -24, -48, -80 c.

Algebra ->  Sequences-and-series -> SOLUTION: Is the formula {{{ a[n]=-4n(n-1) }}} explicit or recursive? Find the first five terms of the sequence. a. recursive; 1, -4, 16, -64, 256 b. recursive; 0, -16, -24, -48, -80 c.      Log On


   

Question 309008: Is the formula +a%5Bn%5D=-4n%28n-1%29+ explicit or recursive? Find the first five terms of the sequence.
a. recursive; 1, -4, 16, -64, 256
b. recursive; 0, -16, -24, -48, -80
c. explicit; 1, -4, 16, -64, 256
d. explicit; 0, -8, -24, -48, -80
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
It's explicit since you are able to find any term you want (eg the first or the eighty first) and you don't need to know anything about any previous terms. I'll let you find the first five terms. Simply plug in n=1, n=2, n=3, n=4, and n=5 and evaluate each individual expression.