你说的对，但是1/(sin(x^3+1)+sin(x^2+1))在x=1处的四阶泰勒公式是1/(2sin(2))-((5cos(2))(x-1))/(4sin(2)^2)+((13sin(2)^2-8cos(2)sin(2)+25cos(2)^2)(x-1)^2)/(8sin(2)^3)+((132sin(2)^3-332cos(2)sin(2)^2+240cos(2)^2sin(2)-375cos(2)^3)(x-1)^3)/(48sin(2)^4)+((602sin(2)^4-1572cos(2)sin(2)^3+2537cos(2)^2sin(2)^2-1800cos(2)^3sin(2)+1875cos(2)^4)(x-1)^4)/(96sin(2)^5)+o(x^4)