− q 7 / 2 + 2 q 5 / 2 − 4 q 3 / 2 + 6 q − 8 q + 9 q 3 / 2 − 8 q 5 / 2 + 6 q 7 / 2 − 5 q 9 / 2 + 2 q 11 / 2 − 1 q 13 / 2 {\displaystyle -q^{7/2}+2q^{5/2}-4q^{3/2}+6{\sqrt {q}}-{\frac {8}{\sqrt {q}}}+{\frac {9}{q^{3/2}}}-{\frac {8}{q^{5/2}}}+{\frac {6}{q^{7/2}}}-{\frac {5}{q^{9/2}}}+{\frac {2}{q^{11/2}}}-{\frac {1}{q^{13/2}}}}
