求∫1／tan^2x+sin^2x dx

求∫1／tan^2x+sin^2x dx 求不定积分∫[tan^2x/(1-sin^2x)]dx 求∫x*tan^2x dx 求不定积分∫(tan^2x+tan^4x)dx 求不定积分 ∫ tan^2 x dx 求不定积分∫(tan^2)x dx 求不定积分 (1)((tan x)^2+(tan x)^4) (2)(1/(1+sin x) dx (3) 1/(2x^2-1) dx (4) (sin x cos x)/(1+(sin 两道不定积分的题(1)∫(1-tan x)/(1+tan x)dx(2)∫1/[5(cos x)^2+3(sin x)^2]dx ∫1-sin2x/sin^2x-x dx求不定积分 求∫ sin^2 x/2 dx .. 求不定积分：∫sin(x^2)dx 求不定积分∫sin(x/2)dx ∫[(sin^2)x]dx求不定积分 求∫sin(x^2)dx 求不定积分∫sin x^2dx 求不定积分 ∫x/sin^2dx sin(x^1/2)dx 求不定积分 求积分 sin(x^1/2) dx