联立方程求出交点：y=x^2y=-x^2+2(a-1)x+2a2x^2-2(a-1)x-2a=0x^2-(a-1)x-a=0(x+1)(x-a)=0x1=-1,x2=a根据定积分的知识可以知道：m(a)=积分（上a,下-1)[g(x)-f(x)]dx=积分（a,-1)(-2x^2+2(a-1)x+2a)dx=(-2/3*x^3+(a-1)...