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