∫1+sin^2x/1-cos2x dx

求不定积分 ∫((1+sin^2x)/(1+cos2x))dx ∫（cos2x/cos方x*sin方x）dx 求不定积分∫(cos2x)/(sin^2x)(cos^2x)dx 微积分 求不定积分 ∫ [(cos2x) / (cos^2x * sin^2x)] dx 3道不定积分数学题求下列不定积分(1)cos2t／cost –sint dt(2)cos2x／sin＾xcos^x dx f(x)=((1+cos2x)^2-2cos2x-1)/(sin(π/4+x)sin(π/4-x)) ∫1/x^2 * sin 1/x dx ∫e^(-2x)sin(1/2x)dx ∫[1/(sin^2(x)cos^4(x)]dx ∫x sin(x^2+1)dx怎么做 求不定积分：∫(1+（cos）^2 x)/(1+cos2x) dx 已知f(sin-1)=cos2x+2,求f(x)