SOLUTION: Determine if the sequece is arithmetic. If the sequence is arithmetic, find the common difference.
a_n = n(n+9)
Algebra.Com
Question 1096859: Determine if the sequece is arithmetic. If the sequence is arithmetic, find the common difference.
a_n = n(n+9)
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Plug in n = 1 to find the first term
n is replaced with 1
------------------------------------------------
Plug in n = 2 to find the second term
Substitute 2 for n
------------------------------------------------
Plug in n = 3 to find the third term
------------------------------------------------
Subtract the second and first terms:
Now subtract the second and third terms
Since this means we do not have an arithmetic sequence.
RELATED QUESTIONS
Is the sequence a^n=6n-17 arithmetic?
if it is what is its first term
and its... (answered by ikleyn)
Is the sequence a[n]=6n-17 arithmetic?
if it is what is its first term
and its... (answered by MathLover1)
... (answered by josgarithmetic)
Consider the following general term for a sequence
a^n=13+(n+11)−6
find the first... (answered by ikleyn)
Write the first five terms of the sequence. Determine whether or not the sequence is... (answered by stanbon)
determine whether the sequence is arithmetic if it is find the common difference... (answered by stanbon)
Given the arithmetic sequence 2, 6, ...
If t(0) is the first term find a formula for... (answered by psbhowmick)
An arithmetic sequence has 1st term 6 and common difference 624. A geometric sequence has (answered by stanbon)
if 4 arithmetic means are inserted between 1 & 36 the sum of the resulting terms is 148... (answered by ikleyn,greenestamps)