− q 13 / 2 + 4 q 11 / 2 − 10 q 9 / 2 + 15 q 7 / 2 − 20 q 5 / 2 + 24 q 3 / 2 − 23 q + 19 q − 15 q 3 / 2 + 8 q 5 / 2 − 4 q 7 / 2 + 1 q 9 / 2 {\displaystyle -q^{13/2}+4q^{11/2}-10q^{9/2}+15q^{7/2}-20q^{5/2}+24q^{3/2}-23{\sqrt {q}}+{\frac {19}{\sqrt {q}}}-{\frac {15}{q^{3/2}}}+{\frac {8}{q^{5/2}}}-{\frac {4}{q^{7/2}}}+{\frac {1}{q^{9/2}}}}
