急!y=2sin(2x+∮)(-π
求画函数图像y=2sin(x+π/3) 急
证明sinx+siny+sinz-sin(x+y+z)=4sin((x+y)/2)sin((x+y)/2)sin((x+
高数:方程y'+2y=sin(2x)的通解是?急!
一道三角恒等式证明题请证明sin(x+y)sin(x-y)=sin^2(x)-sin^2(y)
急,急,求下列函数的最小正周期 y=1+|sinx| y=|sinx|+|cosx| y=2sin(3x+π/4)-1
设函数 f(x)=sin(2x+y),(-π
sin(x+y)sin(x-y)=k,求cos^2x-cos^2y
y=sin2x y=sin(x+π/3) y=3sin(2x+π/3)
matlab画y=sin(x)+sin(2*x)+...+sin(20*x)的图像
已知函数y=2sin(2x-π/4)-2根号2sin^2x
y=sin(π/4+x/2)sin(π/4-x/2) =sin(π/4+x/2)sin[π/2-(π/4+x/2)]
y=sin[sin(x^2)] 则dy/dx=?