求证 sinˇ4X+sin²Xcos²X+cos²X = 1
求证 sinˇ4X+sin²Xcos²X+cos²X = 1
求证 cos*xcos*y + sin*xsin*y + sin*xcos*y + xin*ycos*x = 1
求证:sin(x-y)sin(x+y)/sin²xcos²y=1-cot²xtan
e^sin x(xcos x-(sin x/cos²x))的不定积分怎么算
求函数f(x)=(sin⁴x+cos⁴x+sin²xcos²x)/(2-si
sin^2x+cos^2x)(sin^4x-sin^2xcos^2x+cos^4x) =sin^4x-sin^2xcos
(1-(sin^4x-sin^2xcos^2x+cos^4x)/sin^2x +3sin^2x
∫sin²xcos³x dx
∫ ( cos²x-sin²x/sin²xcos²x) dx=?求积分
设函数f(x)=根号3cos²ωx+sinωxcosωx(ω,a∈R),
∫(1/sin²xcos²x)dx怎么求,
求函数f(x)=(sin四次方x+cos四次方x+sin²xcos²x)/(2-2sinxcosx)