奇偶性f(x)=sin(x+/4)+cos(x+/4)判断函数奇偶性f(x)=sin(x+派/4)+cos(x+派/4)

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奇偶性f(x)=sin(x+/4)+cos(x+/4)判断函数奇偶性f(x)=sin(x+派/4)+cos(x+派/4)奇偶性f(x)=sin(x+/4)+cos(x+/4)判断函数奇偶性f(x)=s

奇偶性f(x)=sin(x+/4)+cos(x+/4)判断函数奇偶性f(x)=sin(x+派/4)+cos(x+派/4)
奇偶性f(x)=sin(x+/4)+cos(x+/4)
判断函数奇偶性
f(x)=sin(x+派/4)+cos(x+派/4)

奇偶性f(x)=sin(x+/4)+cos(x+/4)判断函数奇偶性f(x)=sin(x+派/4)+cos(x+派/4)
f(-x)=sin(-x+π/4)+cos(-x+π/4)=sin(π/2-x-π/4)+cos(π/2-x-π/4)=cos(x+π/4)+sin(x+π/4)=f(x).为偶函数