Answer:
This is the answer I gave and got though I don't think it makes much sense.
I would or would not because we know that using the same method to find the eight partial sum instead of the fifth partial would be a lot more time consuming.
Step-by-step explanation:
We will use the same method to find the eight as well as the fifth partial sum.
An arithmetic progression(AP) is a series of numbers where the difference between consecutive terms is the same throughout the series.
We know that sum of n terms of an AP
[tex]S_n = \frac{n}{2} [2a+(n-1)d][/tex]
Where [tex]a[/tex] is the first term and [tex]d[/tex] is a common difference.
So, eight partial sum
[tex]S_8 = \frac{8}{2} [2a+(8-1)d][/tex]
[tex]S_8 = 4 [2a+7d][/tex]
Fifth partial sum
[tex]S_5 = \frac{5}{2} [2a+(5-1)d][/tex]
[tex]S_8 = \frac{5}{2} [2a+4d][/tex]
So, the same formula was used to find the eight and fifth partial sums.
Therefore, we will use the same method to find the eight as well as the fifth partial sum.
To get more about Arithmetic Progressions visit:
https://brainly.com/question/6561461
