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