− q 9 / 2 + 3 q 7 / 2 − 5 q 5 / 2 + 6 q 3 / 2 − 7 q + 6 q − 6 q 3 / 2 + 3 q 5 / 2 − 2 q 7 / 2 + 1 q 9 / 2 {\displaystyle -q^{9/2}+3q^{7/2}-5q^{5/2}+6q^{3/2}-7{\sqrt {q}}+{\frac {6}{\sqrt {q}}}-{\frac {6}{q^{3/2}}}+{\frac {3}{q^{5/2}}}-{\frac {2}{q^{7/2}}}+{\frac {1}{q^{9/2}}}}