f(x)=cos(2x-π/3)+2sin(x-π/4)怎么化简成(sinx-cosx)(sinx+cosx)
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f(x)=cos(2x-π/3)+2sin(x-π/4)怎么化简成(sinx-cosx)(sinx+cosx)
![f(x)=cos(2x-π/3)+2sin(x-π/4)怎么化简成(sinx-cosx)(sinx+cosx)](/uploads/image/z/9896678-62-8.jpg?t=f%28x%29%3Dcos%282x-%CF%80%2F3%29%2B2sin%28x-%CF%80%2F4%29%E6%80%8E%E4%B9%88%E5%8C%96%E7%AE%80%E6%88%90%EF%BC%88sinx-cosx%EF%BC%89%EF%BC%88sinx%2Bcosx%EF%BC%89)
题目是不是打错了 代数据去算就不成立呢……
f(x)=cos(2x-π/3)+2sin(x-π/4)怎么化简成(sinx-cosx)(sinx+cosx)
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