1 |
2 |
x |
x |
2 |
x |
A.A={x|x>0},B=R,f:x→y|y|=x2 | B.A={-2,0,2},B={4}f:x→y=x2 | ||||
C.A=R,B={y|y>0},f:x→y=
| D.A={0,2},B={0,1},f:x→y=
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A.f(x)=
| B.f(x)=(
| ||||||||
C.f(x)=x与f(x)=
| D.f(x)=
|
A.![]() | B.![]() | C.![]() | D.![]() |
A.f(x)=x与g(x)=(
| B.f(x)=x与g(x)=
| |||||
C.f(x)=x+2与g(x)=
| D.f(x)=x与g(x)=
|
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