A.f(x)=1,g(x)=x0 | B.f(x)=x-1,g(x)=-1 |
C.f(x)=x2,g(x)=()4 | D.f(x)=x3,g(x)= |
A.(1) (2) | B.(2) (3) | C.(2)(4) | D.(1) (3) |
A. | B. |
C. | D. |
A.P=N,Q=N*,f:x→|x-8| |
B.P={1,2,3,4,5,6},Q={-4,-3,0,5,12}, f:x→x(x-4) |
C.P=N*,Q={-1,1},f:x→(-1)x |
D.P=Z,Q={有理数},f:x→x2 |
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