y=sin(45-x/4)sin(15+x/4)cos(15-x/4)的最大值是?

y=sin(45-x/4)sin(15+x/4)cos(15-x/4)的最大值是? 求证sin²x-sin²y=sin(x+y)sin(x-y) 证明sinx+siny+sinz-sin(x+y+z)=4sin((x+y)/2)sin((x+y)/2)sin((x+y)/2) 证明sin(x+y)sin(x-y)=sinx-siny y=sin根号x y=sinx+sin|x| sin(x+y)+e^xy=4x,y'= Mathematica y''+ sin(x) y=x 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) y=[sin^2(x)]*[sin^2(x)]求导 C语言求三角函数f(x,y,z)=sin(x)/(sin(x-y)*sin(x-z))+sin(y)/(sin(y-x)*sin(y-z))+sin(z)/(sin(z-x)*sin(z-y))代码#include #include double fun(double x,double y,double z){double a,b,c,sum;a=sin(x)/(sin(x-y)*sin(x-z));b=sin(y)/(sin(y-x)*sin(y-z));c 求y=sin[sin(x^2)]的导数 函数y=sin(x+15°)+sin(x+75°)的最大值 y=sin^2(2x)+4sin^4(x)的最小正周期是 函数y=sin(x+π/4)sin(x-π/4)的周期为 y=sin^2（2x）+4sin^4（x）的周期 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