sin(2x-3π/4)=1/根号2,x为锐角

化简2sin^2[(π/4)+x]+根号3（sin^x-cos^x）-1 f(x)=2sin^2(π/4+x)+根号3(sin^2x+cos^2x)f(x)=2sin^2(π/4+x)+根号3(sin^2x-cos^2x) 符号打错了 函数f(x)=负根号3sin ^2x+sin x cos x f(a/2)=1/4-根号3/2求sin a值 解三角方程:根号2sin(x+π/4)=1 已知函数f(x)=2根号3sin平方x-sin（2x-π/3) sin(2x-3π/4)=1/根号2,x为锐角 sin(5x)-sin(3x)= 根号2cos(4x)1.sin(5x)-sin(3x)= （根号2）cos(4x)解方程2.sin（x）+sin(2x)+sin(3x)=1+cos(x)+cos(2x) 根号2sin(x+π/4)化简 已知向量a=(根号2sin(4/π+x)+1,-根号3),b=(根号2sin(4/π+x)-1,cos2x函数f(x)=ab (1)若函数h(x)=f(x+t)已知向量a=(根号2sin(4/π+x)+1,-根号3),b=(根号2sin(4/π+x)-1,cos2x函数f(x)=ab(1)若函数h(x)=f(x+t)的图像关于(-6/π,0)对 sin(x)+cos(x)=2/3 根号2倍(sin(2x-π/4)+1)/1+tan(x)=?2sin(x)*cos(x)+2sin(x)^2)/(1+tan(x))=2sin(x)*cos(x)怎么来的。 求函数f(x)=2sin(π-x)sin(π/2-x)+2根号3sin^2x-根号3的单调递减区间 化简 1/2cos x-根号3/2sin x 根3sin x+cos x f(x)=2sinπ/4cosπ/4- 2根号3sin^2π/4+根号3 f(x)=2sinπ/4cosπ/4-2根号3sin^2π/4+根号3 傅里叶级数作图f（x）=2sin[x] - sin[2x] + 2/3sin[3x] - 1/2sin[4x]我用mathematica输入程序Plot[{2sin[x],-2sin[x],2sin[x] - sin[2x],-2sin[x] + sin[2x],2sin[x] - sin[2x] + 2/3sin[3x],-2sin[x] + sin[2x] - 2/3sin[3x],2sin[x] - sin[2x] + 2/3si 已知F(X)=根号3COS^2 X+SIN XCOS X-2SIN X*SIN(X-π/6),求F(X)的最大值 求f（x）=1+sinx-2sin²（π/4-x/2）/4sin（x/2）+根号3sinx/2 化简sin(2x+π/3)-（根号3）sin²x+sinxcosx+(根号3)/2