搜搜考试网∫(x-4x^2+4x^3) (1-x^2)^(1/2) dx=-4∫x^2 * (1-x^2)^(1/2)dx,其中x
∫(x-4x^2+4x^3) (1-x^2)^(1/2) dx=-4∫x^2 * (1-x^2)^(1/2)dx,其中x
∫（x^2+1/x^4)dx
∫1/(x^4-x^2)dx
∫(3x^4+x^2)/(x^2+1)dx
∫（(x+2)/4x(x^2-1)）dx
积分∫x/[(x^2+1)(x^2+4)]dx
∫(x^4-4x^2+5x-15)/(x^2+1)(x-2) dx=?
∫ [(x^3-2x^2+x+1)/(x^4+5x^2+4)]dx
计算 ∫（x^4-2x^3+x^2+1）/x（x-1)² dx
∫ x/(1+X^2)dx=
∫(1-x)^2/x^3 dx
∫(x-1)^2/x^3 dx