求∫2/(2+cos x)dx

求∫2/(2+cos x)dx 求:∫cos^2(2x)dx 求不定积分：∫cos x^2 dx 求∫x^2cos^2(x/2) dx 求解答∫x^2cos(x/2)dx ∫x * cos x^2 dx 求不定积分 求微积分 ∫sin^2(x)cos^4(x) dx 求不定积分∫e^2x * cos e^x dx 求不定积分 ∫ (ln sin x) / (cos^2 x) dx 求积分：∫sin^2 (x) /cos^3 (x) dx cos(x^2)dx 求不定积分 cos^2x dx 求不定积分cos（x^2）dx. 求不定积分∫(cos2x)/(sin^2x)(cos^2x)dx∫(cos2x)/(sin^2x)(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 求积分∫ cosx/(2-cos^2x) dx 9.6求不定积分 ∫ [cos(x/2)]^2dx