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