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