y=sin(兀/3-1/2x),x∈[-2兀,2兀]的单调增区间?

求函数y=sin(x+1/3兀)sin(x+1/2兀)的周期 y=sin(兀/3-1/2x),x∈[-2兀,2兀]增区间? 函数y=1/2sin)2x)+sin^2(x),x∈R的值域 sinx=1/3,sin(x+y)=1,求sin（2y+x）=? 已知sinx=1/3,sin(x+y)=1,则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). Sin x-sin y=2/3 cos x-cos y=1/2 求cos(x-y) sin^2x+cos^2y=1/2 求3sin^2x+sin^2y的最值 已知sinx=3/5,x∈(π/2,π),求【sin(x+y)+sin(x-y)】/【cos（x+y）+cos（x-y）】的值 y =(cos^2) x - sin (3^x),求y' 高数 求导 1 Y=x+x^x 2 Y=sin(x+y高数求导1 Y=x+x^x2 Y=sin(x+y)的二阶导数3 x+y= e^(xy) 三角函数：y=（3sin x+1）/（sin x+2）的值域为（） 化简y=sin^2(x)+2sin(x)cos(x)+3cos^2(x) 求导：y=3^(sin*1/x) Y=SIN(3x-1) y =sin(2x-1)求导! matlab中一些新手问题,syms x y;y =ezplot('1/5*(-2-5/(-125+100*sin(x))*(-20*sin(x)+40+10*(-121*sin(x)^2-100*sin(x)+121+100*sin(x)^3)^(1/2))+5/2*sin(x)/(-125+100*sin(x))*(-20*sin(x)+40+10*(-121*sin(x)^2-100*sin(x)+121+100*sin(x)^3)^(1/2)))*cos(x)