1 1 1 1 1 --------- + --------------- + --------------- + ---------------- + ----------------- x*(x + 3) (x + 3)*(x + 6) (x + 6)*(x + 9) (x + 9)*(x + 12) (x + 12)*(x + 15)
1 1 1 1 1 --------- + --------------- + --------------- + ---------------- + ----------------- x*(3 + x) (3 + x)*(6 + x) (6 + x)*(9 + x) (9 + x)*(12 + x) (12 + x)*(15 + x)
1/(x*(3.0 + x)) + 1/((3.0 + x)*(6.0 + x)) + 1/((6.0 + x)*(9.0 + x)) + 1/((12.0 + x)*(9.0 + x)) + 1/((12.0 + x)*(15.0 + x))
/ / 2 \ 2 2 \ 2 2 2 (12 + x)*(15 + x)*\(9 + x)*(12 + x)*\x*(3 + x) *(6 + x) + (6 + x)*(9 + x)*(x*(3 + x) + (3 + x)*(6 + x))/ + x*(3 + x) *(6 + x) *(9 + x)/ + x*(3 + x) *(6 + x) *(9 + x) *(12 + x) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 2 2 2 2 x*(3 + x) *(6 + x) *(9 + x) *(12 + x) *(15 + x)
1 1 1 1 1 --------- + --------------- + --------------- + ---------------- + ----------------- x*(x + 3) (x + 3)*(x + 6) (x + 6)*(x + 9) (x + 9)*(x + 12) (x + 12)*(x + 15)