− q 3 / 2 + 2 q − 4 q + 5 q 3 / 2 − 7 q 5 / 2 + 7 q 7 / 2 − 7 q 9 / 2 + 6 q 11 / 2 − 5 q 13 / 2 + 3 q 15 / 2 − 2 q 17 / 2 + 1 q 19 / 2 {\displaystyle -q^{3/2}+2{\sqrt {q}}-{\frac {4}{\sqrt {q}}}+{\frac {5}{q^{3/2}}}-{\frac {7}{q^{5/2}}}+{\frac {7}{q^{7/2}}}-{\frac {7}{q^{9/2}}}+{\frac {6}{q^{11/2}}}-{\frac {5}{q^{13/2}}}+{\frac {3}{q^{15/2}}}-{\frac {2}{q^{17/2}}}+{\frac {1}{q^{19/2}}}}
