y=sin^2 {x/(x+1)} 求dy

y=sin(x^2),求dy/d(x^3) y=sin(x^3),求dy/d(x^2) y=sin^2 {x/(x+1)} 求dy y=1-sin(2x)/sin(x)-cos(x)求T.最值 sinx=1/3,sin(x+y)=1,求sin（2y+x）=? siny=1/3,sin(x＋y)=1,求sin(2x＋y) (cosx)^2-(cosy)^2=1/3求sin(x+y)*sin(x-y). y=sin^2*1/x求y Sin x-sin y=2/3 cos x-cos y=1/2 求cos(x-y) sin(x+y)sin(x-y)=k,求cos^2x-cos^2y 微分y=1/sin^2 x 求微分是多少?不是sin^2x 是 sin平方x sin^2x+cos^2y=1/2 求3sin^2x+sin^2y的最值 y =(cos^2) x - sin (3^x),求y' y=sin平方x+2x求y' 求函数y=sin(x+1/3兀)sin(x+1/2兀)的周期 求函数y=sin^2x+9/(1+sin^2x)的值域 求函数y=1/sin^2x+sin^2x的值域 求函数y=sin^2x+9/(1+sin^2x)的值域的值域