q 3 / 2 − 4 q + 7 q − 11 q 3 / 2 + 12 q 5 / 2 − 13 q 7 / 2 + 12 q 9 / 2 − 9 q 11 / 2 + 5 q 13 / 2 − 2 q 15 / 2 {\displaystyle q^{3/2}-4{\sqrt {q}}+{\frac {7}{\sqrt {q}}}-{\frac {11}{q^{3/2}}}+{\frac {12}{q^{5/2}}}-{\frac {13}{q^{7/2}}}+{\frac {12}{q^{9/2}}}-{\frac {9}{q^{11/2}}}+{\frac {5}{q^{13/2}}}-{\frac {2}{q^{15/2}}}}
