摘要：6．已知函数f ( x ) =x∈[ –2.0 ].则f ( x )的反函数是( ) A．f–1 ( x ) = x∈[ 2.0 ] B．f–1 ( x ) = x∈[ –2.0 ] C．f–1 ( x ) = x∈[ 2.0 ] D．f–1 ( x ) = x∈[ – 2.0 ]
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已知函数f ( x ) =
x∈[ 2，0 ]，则f ( x )的反函数是
A．f1 ( x ) = x∈[ 2，0 ]
B．f1 ( x ) = x∈[ 2，0 ]
C．f1 ( x ) =
x∈[ 2，0 ]
D．f1 ( x ) = x∈[ 2，0 ]