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