y=sin(2x-p/3) y=1-cos(x-p/6
Sin x-sin y=2/3 cos x-cos y=1/2 求cos(x-y)
若点P(cosα,sinα)在直线y=-2x上,则1+cos2αcos
点P(X,Y)是曲线C;{X=-2+COSΘ Y=sinΘ(0
y =(cos^2) x - sin (3^x),求y'
极点与原点重合,极轴与x轴正半曲线p=2sin 曲线参数x=2cos y=2根号3/3sin
已知点P(x,y)在曲线x=-2+cosθ,y=sinθ (θ为参数)上,则y/x的取值范围为
设P(x,y)是曲线C:{x=-2+cosθ ,y=sinθ }上意一点,则y/x的取值范围是
化简y=sin^2(x)+2sin(x)cos(x)+3cos^2(x)
sin(x+y)sin(x-y)=k,求cos^2x-cos^2y
当点B(x',y')在椭圆x=2cosθ,y=3sinθ(θ为参数)上运动时,求动点p(x'+y’,x’-y’)的轨迹的
证明COS(X+Y)COS(X-Y)=COS^2X-SIN^2Y
已知p(3sina,2cosa)在直线y=-2x上,求(1-2sin^2a/2)/√2cos(a+π/4)=