− q + 4 q − 10 q 3 / 2 + 15 q 5 / 2 − 22 q 7 / 2 + 25 q 9 / 2 − 25 q 11 / 2 + 22 q 13 / 2 − 16 q 15 / 2 + 10 q 17 / 2 − 5 q 19 / 2 + 1 q 21 / 2 {\displaystyle -{\sqrt {q}}+{\frac {4}{\sqrt {q}}}-{\frac {10}{q^{3/2}}}+{\frac {15}{q^{5/2}}}-{\frac {22}{q^{7/2}}}+{\frac {25}{q^{9/2}}}-{\frac {25}{q^{11/2}}}+{\frac {22}{q^{13/2}}}-{\frac {16}{q^{15/2}}}+{\frac {10}{q^{17/2}}}-{\frac {5}{q^{19/2}}}+{\frac {1}{q^{21/2}}}}
