− q 3 + 2 q 2 − 3 q + 5 − 4 q + 4 q 2 − 3 q 3 + 2 q 4 − 1 q 5 {\displaystyle -q^{3}+2q^{2}-3q+5-{\frac {4}{q}}+{\frac {4}{q^{2}}}-{\frac {3}{q^{3}}}+{\frac {2}{q^{4}}}-{\frac {1}{q^{5}}}}
