SOLUTION: ARITHMETIC SERIES - Sn=n/2(a1 + an) Find the sum of the terms of the following arithmetic sequences. 1, 4/3, 5/3, 2,..., a10 (a, sub 10) S1: an=a1 + (n-1)d [Solve for a10]

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Question 978199: ARITHMETIC SERIES - Sn=n/2(a1 + an)
Find the sum of the terms of the following arithmetic sequences.
1, 4/3, 5/3, 2,..., a10 (a, sub 10)

S1: an=a1 + (n-1)d [Solve for a10]
S2: s10 = n/2 (a1+an) [Solve for S10]
Answer by Edwin McCravy(20056)   (Show Source): You can put this solution on YOUR website!
ARITHMETIC SERIES - Sn=n/2(a1 + an)
Find the sum of the terms of the following arithmetic sequences.
1, 4/3, 5/3, 2,..., a10 (a, sub 10)
To find the common difference:







 

Substitute 10 for n:



Substitute 1 for a1 and calculate a1.

----



Substitute 10 for n:



Substitute 1 for a1 and what you got in the 
first part for a10

Edwin
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