− q 13 / 2 + 3 q 11 / 2 − 6 q 9 / 2 + 9 q 7 / 2 − 13 q 5 / 2 + 14 q 3 / 2 − 15 q + 12 q − 9 q 3 / 2 + 6 q 5 / 2 − 3 q 7 / 2 + 1 q 9 / 2 {\displaystyle -q^{13/2}+3q^{11/2}-6q^{9/2}+9q^{7/2}-13q^{5/2}+14q^{3/2}-15{\sqrt {q}}+{\frac {12}{\sqrt {q}}}-{\frac {9}{q^{3/2}}}+{\frac {6}{q^{5/2}}}-{\frac {3}{q^{7/2}}}+{\frac {1}{q^{9/2}}}}
