q 17 / 2 − 3 q 15 / 2 + 6 q 13 / 2 − 9 q 11 / 2 + 10 q 9 / 2 − 11 q 7 / 2 + 9 q 5 / 2 − 7 q 3 / 2 + 4 q − 2 q {\displaystyle q^{17/2}-3q^{15/2}+6q^{13/2}-9q^{11/2}+10q^{9/2}-11q^{7/2}+9q^{5/2}-7q^{3/2}+4{\sqrt {q}}-{\frac {2}{\sqrt {q}}}}