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