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