7 . The function f is defined as restricted such that
1 f � exists .
f ( x) ( 3x 2 )
2 � � , 5 5
� � x � . The domain of f is
( a ) State the largest possible domain of f .
( b ) Find the expression of
1 f � .
4
( c ) The function g is defined such that ( f g)( x) � x . Find a possible expression of gx ( ).
[ 2 ]
[ 2 ]
[ 2 ]
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