− q 7 / 2 + 3 q 5 / 2 − 6 q 3 / 2 + 9 q − 12 q + 13 q 3 / 2 − 13 q 5 / 2 + 10 q 7 / 2 − 8 q 9 / 2 + 4 q 11 / 2 − 2 q 13 / 2 + 1 q 15 / 2 {\displaystyle -q^{7/2}+3q^{5/2}-6q^{3/2}+9{\sqrt {q}}-{\frac {12}{\sqrt {q}}}+{\frac {13}{q^{3/2}}}-{\frac {13}{q^{5/2}}}+{\frac {10}{q^{7/2}}}-{\frac {8}{q^{9/2}}}+{\frac {4}{q^{11/2}}}-{\frac {2}{q^{13/2}}}+{\frac {1}{q^{15/2}}}}
