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