求∫cos（3x+1）dx.

求∫cos（3x+1）dx. 求∫[0-->π](1-cos³x ）dx 求∫（cos²x+1）^0.5dx 求不定积分!∫cos^(-1)x dx ∫cos√x dx ∫cos((x/3)-1)dx=? ∫cos(3x-1)dx 求不定积分1)∫3^(-x)*(2*3^x-3*2^x)dx 2)∫cos^2(x/2)dx 求下列不定积分.求详解（1）∫[(cos 2x)／(cos x﹢sin x)]dx; (2) ∫cot²xdx; (3) ∫{(1+2x²)／[x²(1+x²)]}dx; (4) ∫sin²(x／2)dx; (5) ∫[(cos2x)／(sin²xcos²x)]dx; (6) ∫[e^(x-4)]dx;求解 求不定积分：∫(sin x/cos^3 x)dx 求不定积分：∫(sin x/cos^3 x)dx 求不定积分∫(cos x+4x^3)dx 求积分：∫sin^2 (x) /cos^3 (x) dx 求 ∫ x^3 • cos³x dx 求∫1/(sin^4x+cos^4x)dx, 求不定积分∫{ x^4 + [1/(3x)]-cos 2x } dx∫{ x^4 + [1/(3x)]-cos 2x } dx 求不定积分∫{1/[√(x+1)+√(x-1)]}dx= ∫(sinx/cos^4x)dx= ∫ (tanx/√cosx）dx= ∫[1/(3+cosx)]dx= ∫（2x－1）cos（x-x＋1）dx求积分? 求∫cos(ln(1/(1-x)))dx