∫sin^2x(1+tanx)dx

∫sin^2x(1+tanx)dx 1.∫ [sin(2x)]^2 dx 2.∫(1-tanx)/(1+tanx) dx ∫(tanx)^1/4 dx/sin^2x ∫ dx/[(1-cosx)sin²x] 令t=tanx/2怎么做 急 求∫tanx/(1-(tanx)^2)dx tanx^2积分除了这种方法∫(tanx)^2dx=∫[(secx)^2-1]dx=tanx-x+C 求不定积分：∫(sin²7x/(tanx + cosx) dx, ∫(tanx+x)dx ∫(x^2+tanx)/(1+x^2)dx ∫x(tanx)^2/1+x^2dx ∫(1+tan^2x)dx/(1+tanx)^3 求积分!∫(tanx)^2/(x^+1)dx 求积分∫(sec^2x/根号(tanx-1))dx ∫sec²x/1+tanx dx 求不定积分∫(x^2)tanx dx 求积分∫x(tanx)^2dx 两题不定积分∫x(secx^2)tanx dx∫x^(1/2)lnx dx ∫dx/(1+tanx)