A.f(-x,y)=f(x,y),f(x,-y)=-f(x,y) B.f(-x

最全题库2022-08-02  11

问题 A.f(-x,y)=f(x,y),f(x,-y)=-f(x,y)B.f(-x,y)=f(x,y),f(x,-y)=f(x,y)C.f(-x,y)=-f(x,y),f(x,-y)=-f(x,y)D.f(-x,y)=-f(x,y),f(x,-y)=f(x,y)

选项 A.f(-x,y)=f(x,y),f(x,-y)=-f(x,y)
B.f(-x,y)=f(x,y),f(x,-y)=f(x,y)
C.f(-x,y)=-f(x,y),f(x,-y)=-f(x,y)
D.f(-x,y)=-f(x,y),f(x,-y)=f(x,y)

答案 B

解析 要求f(x,y)关于x和y都是偶函数。
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