1.y=〔sin(2x-1)+2〕^3
sin^2x+cos^2y=1/2 求3sin^2x+sin^2y的最值
Sin x-sin y=2/3 cos x-cos y=1/2 求cos(x-y)
求导:x^2*y^2 + x sin(y) = 1
y =(cos^2) x - sin (3^x),求y'
Y=1/X X^2+Y^2=9 Y=|-2x| X=-3|sin y|
证明sinx+siny+sinz-sin(x+y+z)=4sin((x+y)/2)sin((x+y)/2)sin((x+
y=2sin(1\2x-π\3)+1
函数y=1-2sin²3x是
y=sin(3x^2+1)求导
1.y=x*e^(2x) 2.y=(sin(2x))/x 3.y=sin(3x+(π/3))怎么求导数!
化简y=sin^2(x)+2sin(x)cos(x)+3cos^2(x)
若sin(x+y)=1/2,sin(x-y)=1/3,则tanx/tany等于?