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