f(x)=sin(2x+π/4)与g(x)=cos(2x-3π/4)图像形状相同,位置不同,过2个图像交点做x轴垂线即是f(x)与g(x)的对称轴.f(x)=g(x)即sin(2x+π/4)=cos(2x-3π/4)∴sin2xcosπ/4+cos2xsinπ/4=cos2xcos3π/4+sin2xsin3π/4==>c...