∫1/x^2*sin(2/x+3)dx求积分

求∫1／tan^2x+sin^2x dx ∫(x^3 )*(sin x^2) dx 求不定积分 求积分：∫sin^2 (x) /cos^3 (x) 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 求不定积分 ∫(sin^5x sin^2x)dx抱歉是∫(sin^5x+sin^2x)dx 求不定积分x( sin^2)x dx 求∫cosx/sin^2xdx； ∫sec5xdx； ∫1/(√x+3√x)dx； ∫[√﹙x-1﹚／x]dx； ∫sin√xdx； 求不定积分∫[1/(sin^2 cos^2(x)]dx 求不定积分∫[1/sin^2cos^2 (x)]dx