− 2 q 3 / 2 + 2 q − 6 q + 4 q 3 / 2 − 7 q 5 / 2 + 4 q 7 / 2 − 4 q 9 / 2 + 2 q 11 / 2 − 1 q 13 / 2 {\displaystyle -2q^{3/2}+2{\sqrt {q}}-{\frac {6}{\sqrt {q}}}+{\frac {4}{q^{3/2}}}-{\frac {7}{q^{5/2}}}+{\frac {4}{q^{7/2}}}-{\frac {4}{q^{9/2}}}+{\frac {2}{q^{11/2}}}-{\frac {1}{q^{13/2}}}}
