q 11 / 2 − 4 q 9 / 2 + 7 q 7 / 2 − 11 q 5 / 2 + 15 q 3 / 2 − 16 q + 15 q − 13 q 3 / 2 + 9 q 5 / 2 − 6 q 7 / 2 + 2 q 9 / 2 − 1 q 11 / 2 {\displaystyle q^{11/2}-4q^{9/2}+7q^{7/2}-11q^{5/2}+15q^{3/2}-16{\sqrt {q}}+{\frac {15}{\sqrt {q}}}-{\frac {13}{q^{3/2}}}+{\frac {9}{q^{5/2}}}-{\frac {6}{q^{7/2}}}+{\frac {2}{q^{9/2}}}-{\frac {1}{q^{11/2}}}}
