Express the integral ∫ 0 1 cos ( 2 π t ) ( t 2 − t ) d t {\displaystyle \int _{0}^{1}\cos(2\pi t)(t^{2}-t)\,dt} in terms of c-1 and c1. Then, plug n = -1 and n = 1 in the formular for cn given in part (d).
