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