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