− q + 3 q − 7 q 3 / 2 + 10 q 5 / 2 − 13 q 7 / 2 + 15 q 9 / 2 − 14 q 11 / 2 + 11 q 13 / 2 − 9 q 15 / 2 + 4 q 17 / 2 − 2 q 19 / 2 + 1 q 21 / 2 {\displaystyle -{\sqrt {q}}+{\frac {3}{\sqrt {q}}}-{\frac {7}{q^{3/2}}}+{\frac {10}{q^{5/2}}}-{\frac {13}{q^{7/2}}}+{\frac {15}{q^{9/2}}}-{\frac {14}{q^{11/2}}}+{\frac {11}{q^{13/2}}}-{\frac {9}{q^{15/2}}}+{\frac {4}{q^{17/2}}}-{\frac {2}{q^{19/2}}}+{\frac {1}{q^{21/2}}}}
