q 5 / 2 − 4 q 3 / 2 + 8 q − 13 q + 16 q 3 / 2 − 19 q 5 / 2 + 18 q 7 / 2 − 15 q 9 / 2 + 11 q 11 / 2 − 7 q 13 / 2 + 3 q 15 / 2 − 1 q 17 / 2 {\displaystyle q^{5/2}-4q^{3/2}+8{\sqrt {q}}-{\frac {13}{\sqrt {q}}}+{\frac {16}{q^{3/2}}}-{\frac {19}{q^{5/2}}}+{\frac {18}{q^{7/2}}}-{\frac {15}{q^{9/2}}}+{\frac {11}{q^{11/2}}}-{\frac {7}{q^{13/2}}}+{\frac {3}{q^{15/2}}}-{\frac {1}{q^{17/2}}}}
