>>433
> (ka+b)/(a+kb)+(kb+c)/(b+kc)+(kc+a)/(c+ka)
> = 2k + 1/k -{[2(k-1)^2 +1]kq + (1/k)(2k-1)(k-1)(k+1)^3・abc}/{kp+kkq+(1+k)^3・abc}

qの係数は、2(k-1)^2 +1]kq ぢゃなくて、k(k^2-1)q ではござらぬか?