q 5 / 2 − 4 q 3 / 2 + 7 q − 11 q + 13 q 3 / 2 − 15 q 5 / 2 + 14 q 7 / 2 − 11 q 9 / 2 + 8 q 11 / 2 − 5 q 13 / 2 + 2 q 15 / 2 − 1 q 17 / 2 {\displaystyle q^{5/2}-4q^{3/2}+7{\sqrt {q}}-{\frac {11}{\sqrt {q}}}+{\frac {13}{q^{3/2}}}-{\frac {15}{q^{5/2}}}+{\frac {14}{q^{7/2}}}-{\frac {11}{q^{9/2}}}+{\frac {8}{q^{11/2}}}-{\frac {5}{q^{13/2}}}+{\frac {2}{q^{15/2}}}-{\frac {1}{q^{17/2}}}}