9231 P11 - Nov 2016 - Q1 - 5 marks
6316
Use the method of differences to find \(\sum_{r=1}^{n} \frac{1}{(2 r)^{2}-1}\).
Deduce the value of \(\sum_{r=1}^{\infty} \frac{1}{(2 r)^{2}-1}\).
Solutions locked. Please sign in with access to view them.