I just need problem 3: Find the the sum of the series: 1/2^4 + 1/4^4+1/6^4+1/8^4 +...... Solution if u have solved the first two questions then the third part is obtained by the difference of the two expressions implies 1/2^4 + 1/4^4+1/6^4+1/8^4 +...... =^4/90 -^4/96.

1. I just need problem 3:
Find the the sum of the series:
1/2^4 + 1/4^4+1/6^4+1/8^4 +......
Solution
if u have solved the first two questions then the third part is obtained by the difference of the two
expressions
implies
1/2^4 + 1/4^4+1/6^4+1/8^4 +...... =^4/90 -^4/96