化简:[2cos³x-sin²(360°-x)+2sin(90°+x)+1]÷[2+2cos&sup
化简:[2cos³x-sin²(360°-x)+2sin(90°+x)+1]÷[2+2cos&sup
化简[1-(sin^4x-sin^2cos^2x+cos^4x)/(sin^2)]+3sin^2x
化简 1/2cos x-根号3/2sin x 根3sin x+cos x
方程求导y=x/(x2+1)y=x²sin²(3x+2)y=ax(x方)cos³3xy=㏒
2cos x (sin x -cos x)+1
化简 cos^2(x)*sin^2(x)-sin^2(x)
化简 cos^(2)(x)*sin^(2)(x)-sin^(2)(x)
证明sin4次方x+cos四次方x=1-2sin²xcos²x
已知函数f(x)=cos²x/2-sin²x/2+sin+求f(x)最小正周期
三角函数证明及化简题1.证明sin^6x+cos^6x=(sin^2x+cos^2x)(cos^4x-cos^2xsin
已知tan=2,求(cos x+sin x)/(cos x-sin x)+sin^2x
设f(x)=[2cos^3 x-sin^2 (360°-x)+2sin(90°+x)+1]/2+2cos^2 (180°