2 m 3 m 2 m 9 2m 1 July 8, 2019 16 32 64 128 2 m 3 m 3m - (9m ^ 2 - 1)/(3m) (2m)/(m - 3) + m/(m + 3) + (2m ^ 2)/(9 - m ^ 2) 2 9 m
