q 11 / 2 − 4 q 9 / 2 + 8 q 7 / 2 − 13 q 5 / 2 + 17 q 3 / 2 − 19 q + 18 q − 16 q 3 / 2 + 11 q 5 / 2 − 7 q 7 / 2 + 3 q 9 / 2 − 1 q 11 / 2 {\displaystyle q^{11/2}-4q^{9/2}+8q^{7/2}-13q^{5/2}+17q^{3/2}-19{\sqrt {q}}+{\frac {18}{\sqrt {q}}}-{\frac {16}{q^{3/2}}}+{\frac {11}{q^{5/2}}}-{\frac {7}{q^{7/2}}}+{\frac {3}{q^{9/2}}}-{\frac {1}{q^{11/2}}}}
