7 q 9 / 2 − 7 q 7 / 2 + 5 q 5 / 2 − 4 q 3 / 2 + q 17 / 2 − 3 q 15 / 2 + 5 q 13 / 2 − 6 q 11 / 2 + q − 1 q {\displaystyle 7q^{9/2}-7q^{7/2}+5q^{5/2}-4q^{3/2}+q^{17/2}-3q^{15/2}+5q^{13/2}-6q^{11/2}+{\sqrt {q}}-{\frac {1}{\sqrt {q}}}}
