9 3a 4 )= 13 2a 1 July 8, 2019 16 32 64 128 9 3+4a (4a ^ 2 - 9)(1/(2a - 3) - 1/(2a + 3)) (4a ^ 2 - 1)/(a ^ 2 - 9) / ((6a + 3)/(a + 3))
