題組內容

4. Letf(x)=x/(1-x) and g(x)=1/(1-x2).

(c) Use f(x) and g(x) to express the generating function for the number of integer solution, 61e635c2261ef.jpg = 100 with c1 ≥ 0 and c2 ≥ 1, such that the answer is the coefficient of61e637d1cada2.jpg