化简 f(x)= -sin(2x+π/4)+cos(2x+π/4)

来源：学生作业学帮网编辑：学帮网时间：2024/06/05 15:37:18

f(x)= -sin(2x+π/4)+cos(2x+π/4)
=-√2[√2/2*sin(2x+π/4)-√2/2*cos(2x+π/4)]
=-√2sin(2x+π/4-π/4)
=-√2sin2x