q 7 / 2 − 2 q 5 / 2 + 4 q 3 / 2 − 6 q + 7 q − 9 q 3 / 2 + 8 q 5 / 2 − 8 q 7 / 2 + 6 q 9 / 2 − 4 q 11 / 2 + 2 q 13 / 2 − 1 q 15 / 2 {\displaystyle q^{7/2}-2q^{5/2}+4q^{3/2}-6{\sqrt {q}}+{\frac {7}{\sqrt {q}}}-{\frac {9}{q^{3/2}}}+{\frac {8}{q^{5/2}}}-{\frac {8}{q^{7/2}}}+{\frac {6}{q^{9/2}}}-{\frac {4}{q^{11/2}}}+{\frac {2}{q^{13/2}}}-{\frac {1}{q^{15/2}}}}
