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下列各组函数是同一函数的是①与; ②f(x)=x与;③f(x)=x与; ④f(x)=x2-...
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下列各组函数是同一函数的是( )
①
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAE4AAAAbCAYAAADS6blZAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
与
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAFUAAAASCAYAAAAqqJKOAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
;
②f(x)=x与
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEIAAAAbCAYAAADI1VnXAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
;
③f(x)=x与
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADYAAAAjCAYAAADfXvn1AAAAAXNSR0IArs4c6QAAAARnQU1BAACx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==
)
;
④f(x)=x
2-2x-1与g(t)=t
2-2t-1.
A.①②
B.①③
C.③④
D.①④
相关试题
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下列各组函数是同一函数的是( )
①
与
;
②f(x)=x与
;
③f(x)=x与
;
④f(x)=x2-2x-1与g(t)=t2-2t-1.
A.①②
B.①③
C.③④
D.①④
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下列各组函数是同一函数的是( )
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②f(x)=x与
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下列各组函数是同一函数的是( )
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与
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下列各组函数是同一函数的是( )
①
与
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②f(x)=x与
;
③f(x)=x与
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④f(x)=x2-2x-1与g(t)=t2-2t-1.
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下列各组函数是同一函数的是( )
①
与
;
②f(x)=x与
;
③f(x)=x与
;
④f(x)=x2-2x-1与g(t)=t2-2t-1.
A.①②
B.①③
C.③④
D.①④
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下列各组函数是同一函数的是( )
①
与
;
②f(x)=x与
;
③f(x)=x与
;
④f(x)=x2-2x-1与g(t)=t2-2t-1.
A.①②
B.①③
C.③④
D.①④
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下列各组函数是同一函数的是( )
①
与
;
②f(x)=x与
;
③f(x)=x与
;
④f(x)=x2-2x-1与g(t)=t2-2t-1.
A.①②
B.①③
C.③④
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