Question
Asked Dec 21, 2019
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Suppose that {a1, a2, a3, …} is an arithmetic sequence with common difference d. Explain why {a1, a3 ,a5, …} is also an arithmetic sequence.

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Expert Answer

Step 1

It is given that the given sequence is arithmetic sequence with common difference d.

The given sequence is:

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{a. az.az.} where, a, is the first term and d is the common difference

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Step 2

So, the nth term can be written as:

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а, —а+(п-1)d = a-

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Step 3

Now, it is required to prove that the below sequence is also arithmetic th...

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{a.a,.a,.} 4, Az,ɑ5..

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