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