− q 13 / 2 + 3 q 11 / 2 − 5 q 9 / 2 + 7 q 7 / 2 − 8 q 5 / 2 + 9 q 3 / 2 − 8 q + 5 q − 4 q 3 / 2 + 1 q 5 / 2 − 1 q 7 / 2 {\displaystyle -q^{13/2}+3q^{11/2}-5q^{9/2}+7q^{7/2}-8q^{5/2}+9q^{3/2}-8{\sqrt {q}}+{\frac {5}{\sqrt {q}}}-{\frac {4}{q^{3/2}}}+{\frac {1}{q^{5/2}}}-{\frac {1}{q^{7/2}}}}
