Question

c)Find the sum of the first n terms of the arithmetic sequence

1/n,3/n,5/n,7/n....?

d)What is the sum of the first 2020 terms of the arithmetic

sequence 1/2020,3/2020,5/2020,7/2020......?
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Answer 1

Answer:

The formula says that the sum of the first n terms of our arithmetic sequence is equal to n divided by 2 times the sum of twice the beginning term, a, and the product of d, the common difference, and n minus 1. The n stands for the number of terms we are adding together.

Step-by-step explanation:

The sum of n terms of AP is the sum(addition) of first n terms of the arithmetic sequence. It is equal to n divided by 2 times the sum of twice the first term – 'a' and the product of the difference between second and first term-'d' also known as common difference, and (n-1), where n is numbers of terms to be added.

Answer 2

Answer:

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