f(x)=2sin(π/4x+π/4)+2sin(π/4x+3π/4)在[-6,-2/3]上的最大值和最小值以及相应的x的值

f(x)=（1+cotx)sin^2x-2sin(x+π/4)sin(x-π/4)还有一题, 已知函数f(x)=(1+1 anx)sin^2x+m sin(x+π/4)sin(x-π/4) f(x)=sin(x+π/4)图像怎样变成F(x)=cos(2x) 函数f(x)=2sin(x+π/4)sin(x-π/4)+sin2x的值域 求f【x】=2sin[x+π/4]sin[x-π/4]+sin2x的最大值 证明∫( 0,π／2 ) (f sin x/(f sin x+f cos x) dx=π /4 若f(x)=sin(π/4)x,求f(1)+f(2)+.+f(2010) 设f(x)=sin(x+4/π),则f(2x)= 已知f(x)=cos^2x/1+sin^2x求f'(π/4)求导 f(x)=cos(2x-x/3)+2sin(x-π/4)sin(x+π/4)sin(x+π/4)化简. 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 已知函数f(x)=4sinx-2/1+sin²x 证明f(x+2π)=f(x) 已知函数f(x)=2^(2-x),x>=2;f(x)=sinπx/4,-2 f(x)=2sin(π/4 x+π/4) 计算f(1)+f(2)+f(3)+...f(2011) 已知函数f(x)=cos2x/[sin(π/4-x)] f(x)=sin(x+π/4)是什么函数 f(x)=sin²(x+π/4)-sin²(x-π/4)是 函数F(X)=sin x+sin(x+π/2),x∈R 若f(x)=3/4,求sin2α的值