部分分数分解 演習4

1 / { (2k-1)(2k+1)(2k+3) }

(2k+1) / { k²(k+1)² }

2 / { (2n-1)(2n+1) }

1 / { x(x-4) }

1 / { (3n-2)(3n+1) }

1 / { (t+1)(t-1) }

x / { (x-1)(2x-1) }

2 / { n(n+3) }