2x 2 m 2 m 1 x 2m 2 3m 5 0 July 8, 2019 16 32 64 128 ((2m + 1)/(2m - 1) - (2m - 1)/(2m + 1)) / ((4m)/(10m - 5)) 2) (m + 1)/(m ^ 2 + m + 1) - 2/(1 - m) + (3m ^ 2 + 2m + 4)/(1 - m ^ 3) 2 x 2 m