− q + 4 q − 10 q 3 / 2 + 16 q 5 / 2 − 22 q 7 / 2 + 24 q 9 / 2 − 24 q 11 / 2 + 20 q 13 / 2 − 15 q 15 / 2 + 8 q 17 / 2 − 3 q 19 / 2 + 1 q 21 / 2 {\displaystyle -{\sqrt {q}}+{\frac {4}{\sqrt {q}}}-{\frac {10}{q^{3/2}}}+{\frac {16}{q^{5/2}}}-{\frac {22}{q^{7/2}}}+{\frac {24}{q^{9/2}}}-{\frac {24}{q^{11/2}}}+{\frac {20}{q^{13/2}}}-{\frac {15}{q^{15/2}}}+{\frac {8}{q^{17/2}}}-{\frac {3}{q^{19/2}}}+{\frac {1}{q^{21/2}}}}