必须给分 for examplewant to find the area between y=x & x^2 first find their intersection point交点 x=1 x=0so area = integration积分 of (x-x^2)dxfrom 0 to 1so 1/2x^2-1/3x^3 put x=1 1/2-1/3 =1/6so the ...