− 2 q 3 / 2 + 4 q − 6 q + 7 q 3 / 2 − 9 q 5 / 2 + 7 q 7 / 2 − 6 q 9 / 2 + 4 q 11 / 2 − 2 q 13 / 2 + 1 q 15 / 2 {\displaystyle -2q^{3/2}+4{\sqrt {q}}-{\frac {6}{\sqrt {q}}}+{\frac {7}{q^{3/2}}}-{\frac {9}{q^{5/2}}}+{\frac {7}{q^{7/2}}}-{\frac {6}{q^{9/2}}}+{\frac {4}{q^{11/2}}}-{\frac {2}{q^{13/2}}}+{\frac {1}{q^{15/2}}}}
