y=sin^4(3x)cos^3(4x)怎么做y=sin^4(3x)cos^3(4x)这个题目怎么求函数的导数

证明sin^2(x)+cos^2(x+30)+sin(x)cos(x+30)=3/4 化简y=sin^2(x)+2sin(x)cos(x)+3cos^2(x) y=2cos(x/4+ π/3)-3sin(x- π/4)y=sin(4x- π/3)-cos(3x+π/2) 求y=sin^5x ,y=cos(4x+3) 的导数, y =(cos^2) x - sin (3^x),求y' y=sin^2x-3sinxcosx+4cos^2x是否等于y=sin^2x+cos^2x+3cos^2x-3/2*sin2x?y=sin^2x-3sinxcosx+4cos^2xy=sin^2x+cos^2x+3cos^2x-3/2*sin2x=1+3cos^2x-3/2*sin2x=1+3（1-sin^2x）-3/2*sin2x=-3sin^2x-3/2*sin2x+4 Sin x-sin y=2/3 cos x-cos y=1/2 求cos(x-y) 已知点p(x,y)为曲线C:{x=3sinθ 4cosθ y=4sinθ-3cosθ上动点若不等式x m 求函数y=cos(9/2π+x)+sin^2x的最大值和最小值还有一题 已知sinx+cosx=1/2,求sin^3x+cos^3x和sin^4x+cos^2x y=4sin(3x+(π/4))+3cos(3x+(π/4)),求周期 y=(4-3sin x)(4-3cos x)最小值 函数y=3sin(x/3)+4cos(x/3)的最大值. y=sin^4x+2√3 sinxcosx-cos^4x 化简 y=cos^4x-sin^4x的周期是 3Q y=sin(x+7派/4）+cos(x-3派/4） y=sin(2x-π/4)+cos(3x+π/3)的导数 求y=2sin(x/2)-3cos(3x/4)的最小正周期 函数Y=4cos(x-20°)+3sin(x+10°)的最大值