q 15 / 2 − 4 q 13 / 2 + 9 q 11 / 2 − 16 q 9 / 2 + 21 q 7 / 2 − 25 q 5 / 2 + 25 q 3 / 2 − 22 q + 16 q − 10 q 3 / 2 + 4 q 5 / 2 − 1 q 7 / 2 {\displaystyle q^{15/2}-4q^{13/2}+9q^{11/2}-16q^{9/2}+21q^{7/2}-25q^{5/2}+25q^{3/2}-22{\sqrt {q}}+{\frac {16}{\sqrt {q}}}-{\frac {10}{q^{3/2}}}+{\frac {4}{q^{5/2}}}-{\frac {1}{q^{7/2}}}}
