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