Asked by David
Find the first 4 terms of the recursively defined sequence.
a subscript 1 =9, a subscript 2 =9, a Subscript n+1=a Subscript n +a Subscript n-1
Are the first four terms
A)9,9,18,18
B)9,9,9,27
C)9,9,81,729
D)9,9,18,27
a subscript 1 =9, a subscript 2 =9, a Subscript n+1=a Subscript n +a Subscript n-1
Are the first four terms
A)9,9,18,18
B)9,9,9,27
C)9,9,81,729
D)9,9,18,27
Answers
Answered by
Steve
what's the trouble? Each term, starting with the 3rd, is the sum of the two previous terms.
Since the first two terms are 9,9 the sequence continues with
9+9 = 18
9+18 = 27
18+27 = 45
...
You might try writing the sequence as
a_(n+1) = a_n + a_(n-1)
saves using all those noisy words.
Since the first two terms are 9,9 the sequence continues with
9+9 = 18
9+18 = 27
18+27 = 45
...
You might try writing the sequence as
a_(n+1) = a_n + a_(n-1)
saves using all those noisy words.