求dx／（4sin^2x+cos^2x）的不定积分

求微积分 ∫sin^2(x)cos^4(x) dx 求dx／（4sin^2x+cos^2x）的不定积分 求不定积分 ：| ( sin^2 x / cos^3x ) dx 求微分sin^2x*cos^5x*dx 求不定积分 ∫ (ln sin x) / (cos^2 x) dx 求积分：∫sin^2 (x) /cos^3 (x) dx ∫sin(x) cos^2(x)dx 求不定积分∫(cos2x)/(sin^2x)(cos^2x)dx∫(cos2x)/(sin^2x)(cos^2x)dx 求不定积分 ∫ sin∧4x/cos∧2x dx求不定积分 ∫ sin∧4x/cos∧2x dx 求不定积分∫[1/(sin^2 cos^2(x)]dx 求不定积分∫[1/sin^2cos^2 (x)]dx ∫dx/cos^2X+4sin^2X ∫[1/(sin^2(x)cos^4(x)]dx 求解∫1/(cos^4(x)sin^2(x))dx 求下列不定积分.求详解（1）∫[(cos 2x)／(cos x﹢sin x)]dx; (2) ∫cot²xdx; (3) ∫{(1+2x²)／[x²(1+x²)]}dx; (4) ∫sin²(x／2)dx; (5) ∫[(cos2x)／(sin²xcos²x)]dx; (6) ∫[e^(x-4)]dx;求解 求不定积分：$(sin x +cos x)/(1+cos^2x) dx 求不定积分∫cos³（2x）sin（2x）dx 求积分∫（cos^2x/sin^2x）dx