∫1/1-cos x dx

/ (cos x + 1 ) dx ∫1/(1+cos^2(x)) dx ∫1/1-cos x dx ∫(1-sin/x+cos)dx不定积分 ∫(1+sinx) / cos^2 x dx ∫cos((x/3)-1)dx=? ∫(1-cos^(2)2x)dx ∫cos(3x-1)dx 求不定积分!∫cos^(-1)x dx ∫cos√x dx ∫{cos(1/x)/x的平方}dx ∫{cos(1/x)/x的平方}dx ∫(1+sin^2x)/(cos^2x)dx 求∫1/(sin^4x+cos^4x)dx, ∫[1/(sin^2(x)cos^4(x)]dx 求解∫1/(cos^4(x)sin^2(x))dx ∫ x cos(x^2 + 1)dx 请问怎决解? ∫ cos(x-1)dx、 ∫ x^3e^x^2dx怎么解 求∫cos(ln(1/(1-x)))dx