∫(cos^3x/sin^2x)dx

∫sin(x) cos^2(x)dx ∫(cos^3x/sin^2x)dx ∫ [cos^3(x)]/[sin^2 (x)]dx ∫sin^3(x)cos^2(x)dx= 求积分：∫sin^2 (x) /cos^3 (x) dx ∫3/(x*x*x+1)dx ∫1/(2+sin x)dx 和 ∫1/(2sin x-cos x+5)dx的解法 ∫dx/[sin^2(x/2)cos^2(x/2)] ∫(1+sin^2x)/(cos^2x)dx ∫dx/cos^2X+4sin^2X ∫ dx/[sin^(2) x·cos^(2) x] 求不定积分：∫(sin x/cos^3 x)dx 求不定积分：∫(sin x/cos^3 x)dx ∫cos^4x/sin^3x dx=? ∫sin(3x)cos(4x)dx= ∫ sin^4(x)cos^3(x)dx 求微积分 ∫sin^2(x)cos^4(x) dx 求不定积分 ∫ (ln sin x) / (cos^2 x) dx ∫[1/(sin^2(x)cos^4(x)]dx