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