q 15 / 2 − 2 q 13 / 2 + 4 q 11 / 2 − 7 q 9 / 2 + 8 q 7 / 2 − 10 q 5 / 2 + 10 q 3 / 2 − 9 q + 6 q − 4 q 3 / 2 + 2 q 5 / 2 − 1 q 7 / 2 {\displaystyle q^{15/2}-2q^{13/2}+4q^{11/2}-7q^{9/2}+8q^{7/2}-10q^{5/2}+10q^{3/2}-9{\sqrt {q}}+{\frac {6}{\sqrt {q}}}-{\frac {4}{q^{3/2}}}+{\frac {2}{q^{5/2}}}-{\frac {1}{q^{7/2}}}}
