Question

Let S be the sum of the infinite series an + a2
+ a3 + ........ where for a positive integer m,
1
if n = 4 m - 3 or n = 4m-2
21-1
an
-1
if n = 4 m - 1 or n = 4 m
20-1
Find the value of 30S.​

Answer 1

Answer

✯ \frac{5}{2} \times 75

2

5

×75

☞ \frac{375}{2}

2

375

Answer 2

Answer:

your answer is 375 ....

Explanation:

hope this helps you...