已知f(x)=x²(x>0)或1(x=0)或0(x<0) f(f(-2)),f(f(f(-2)))的值怎么求
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![已知f(x)=x²(x>0)或1(x=0)或0(x<0) f(f(-2)),f(f(f(-2)))的值怎么求](/uploads/image/z/3985712-8-2.jpg?t=%E5%B7%B2%E7%9F%A5f%EF%BC%88x%EF%BC%89%3Dx%26%23178%3B%EF%BC%88x%EF%BC%9E0%EF%BC%89%E6%88%961%EF%BC%88x%3D0%EF%BC%89%E6%88%960%EF%BC%88x%EF%BC%9C0%EF%BC%89+f%EF%BC%88f%EF%BC%88-2%EF%BC%89%EF%BC%89%2Cf%EF%BC%88f%EF%BC%88f%28-2%29%29%29%E7%9A%84%E5%80%BC%E6%80%8E%E4%B9%88%E6%B1%82)
已知f(x)=x²(x>0)或1(x=0)或0(x<0) f(f(-2)),f(f(f(-2)))的值怎么求
已知f(x)=x²(x>0)或1(x=0)或0(x<0) f(f(-2)),f(f(f(-2)))的值怎么求
已知f(x)=x²(x>0)或1(x=0)或0(x<0) f(f(-2)),f(f(f(-2)))的值怎么求
解
f(x)=x² x>0
1 x=0
0 x