4 q 9 / 2 − 4 q 9 / 2 − 8 q 7 / 2 + 8 q 7 / 2 + 13 q 5 / 2 − 14 q 5 / 2 − 18 q 3 / 2 + 18 q 3 / 2 − q 11 / 2 + 1 q 11 / 2 + 20 q − 21 q {\displaystyle 4q^{9/2}-{\frac {4}{q^{9/2}}}-8q^{7/2}+{\frac {8}{q^{7/2}}}+13q^{5/2}-{\frac {14}{q^{5/2}}}-18q^{3/2}+{\frac {18}{q^{3/2}}}-q^{11/2}+{\frac {1}{q^{11/2}}}+20{\sqrt {q}}-{\frac {21}{\sqrt {q}}}}
