化简函数f(x)=sin(wx+φ)+cos(wx+φ) (w>0 ,|φ|0 ,|φ|
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化简函数f(x)=sin(wx+φ)+cos(wx+φ)(w>0,|φ|0,|φ|化简函数f(x)=sin(wx+φ)+cos(wx+φ)(w>0,|φ|0,|φ|化简函数f(x)=sin(wx+φ)
化简函数f(x)=sin(wx+φ)+cos(wx+φ) (w>0 ,|φ|0 ,|φ|
化简函数f(x)=sin(wx+φ)+cos(wx+φ) (w>0 ,|φ|0 ,|φ|
化简函数f(x)=sin(wx+φ)+cos(wx+φ) (w>0 ,|φ|0 ,|φ|
f(x)=√2sin(wx+φ+π/4)
2π/w=π
w=2
f(x)=√2sin(2x+φ+π/4)
f(-x)=√2sin(-2x+φ+π/4)
f(x)=f(-x)
sin(2x+φ+π/4)=sin(-2x+φ+π/4)
2x+φ+π/4=-2x+φ+π/4+2kπ 或 (2x+φ+π/4)+(-2x+φ+π/4)=π
第一种可能性 与x有关 ∴舍
第二种可能性 φ=π/4
化简函数f(x)=sin(wx+φ)+cos(wx+φ) (w>0 ,|φ|0 ,|φ|
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设函数f(x)=sin(wx+φ)+cos(wx+φ)(w>0,|φ|
设函数f(x)=sin(wx+φ)+cos(wx+φ)(w>0,|φ|
设函数f(x)=sin(wx+φ)+cos(wx+φ)(w>0,|φ|
设函数f(x)=sin(wx+φ)+cos(wx+φ)(w>0,|φ|
老师好:设函数f(x)=sin(wx+φ)+cos(wx+φ)(w>0,|φ|
设函数f(x)=sin(wx+φ)+cos(wx+φ)(w>0,|φ|
设函数f(x)=sin(wx+φ)+cos(wx+φ)(w>0,|φ|
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