y=sin(x+π\4)&y=sin(x-π\4)的函数图象怎么画,我想要图像和解析,

求证sin²x-sin²y=sin(x+y)sin(x-y) Mathematica y''+ sin(x) y=x 证明sin(x+y)sin(x-y)=sinx-siny y=sin根号x y=sinx+sin|x| 已知x+y+z=π,证明sin(x+y)+sin(y+z)+sin(z+x)≥sin2x+sin2y+sin2z y=sin(x+π/3)周期 y=|sinπx|的周期 证明sinx+siny+sinz-sin(x+y+z)=4sin((x+y)/2)sin((x+y)/2)sin((x+y)/2) sin(x+y)+e^xy=4x,y'= 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) 函数y=sin(x+π/4)sin(x-π/4)的周期为 关于函数y=sin(x+π/4)+sin(π/4-x),是奇函数还是偶函数 函数y=sin(x+π/4)+sin(x-π/4)的最大值 函数y=4sin(x+π/6)+3sin(π/3-x)的最大值是多少 y=[sin^2(x)]*[sin^2(x)]求导 y=(sin x + COS x)^2 求导 y=sin(x^x)