SOLUTION: Give the arithmetic series (2,4,6,8,10,12,14)

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Question 1088374: Give the arithmetic series
(2,4,6,8,10,12,14)
Answer by MathLover1(20850) About Me  (Show Source):
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(2,4,6,8,10,12,14)
first term a%5B1%5D=2
second term a%5B2%5D=4
difference d=4-2=2
second term a%5B2%5D=4
third term a%5B3%5D=6
difference d=6-4=2

so, the terms have a common difference d=2, and this is indeed an arithmetic sequence.
The last term in the partial sum will be:
a%5Bn%5D=a%5B1%5D%2B%28n-1%29d...since d=2
a%5Bn%5D=a%5B1%5D%2B%28n-1%292