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