q 9 / 2 − 5 q 7 / 2 + 10 q 5 / 2 − 17 q 3 / 2 + 22 q − 26 q + 26 q 3 / 2 − 22 q 5 / 2 + 16 q 7 / 2 − 10 q 9 / 2 + 4 q 11 / 2 − 1 q 13 / 2 {\displaystyle q^{9/2}-5q^{7/2}+10q^{5/2}-17q^{3/2}+22{\sqrt {q}}-{\frac {26}{\sqrt {q}}}+{\frac {26}{q^{3/2}}}-{\frac {22}{q^{5/2}}}+{\frac {16}{q^{7/2}}}-{\frac {10}{q^{9/2}}}+{\frac {4}{q^{11/2}}}-{\frac {1}{q^{13/2}}}}