− q 5 / 2 + 2 q 3 / 2 − 4 q + 6 q − 8 q 3 / 2 + 8 q 5 / 2 − 9 q 7 / 2 + 7 q 9 / 2 − 5 q 11 / 2 + 3 q 13 / 2 − 1 q 15 / 2 {\displaystyle -q^{5/2}+2q^{3/2}-4{\sqrt {q}}+{\frac {6}{\sqrt {q}}}-{\frac {8}{q^{3/2}}}+{\frac {8}{q^{5/2}}}-{\frac {9}{q^{7/2}}}+{\frac {7}{q^{9/2}}}-{\frac {5}{q^{11/2}}}+{\frac {3}{q^{13/2}}}-{\frac {1}{q^{15/2}}}}
