− q 7 / 2 + 5 q 5 / 2 − 13 q 3 / 2 + 20 q − 27 q + 30 q 3 / 2 − 30 q 5 / 2 + 25 q 7 / 2 − 18 q 9 / 2 + 10 q 11 / 2 − 4 q 13 / 2 + 1 q 15 / 2 {\displaystyle -q^{7/2}+5q^{5/2}-13q^{3/2}+20{\sqrt {q}}-{\frac {27}{\sqrt {q}}}+{\frac {30}{q^{3/2}}}-{\frac {30}{q^{5/2}}}+{\frac {25}{q^{7/2}}}-{\frac {18}{q^{9/2}}}+{\frac {10}{q^{11/2}}}-{\frac {4}{q^{13/2}}}+{\frac {1}{q^{15/2}}}}
