x
4 . Let f ( x) � e and g x
2
( ) 2x
5 � � , x � 0 .
( a ) Find ( g f )( x ).
( b ) ( i ) Solve the equation ( g f )( x) x
3
� .
[ 2 ]
( ii ) Hence , find the value of p if f p � g p .
3 �1
( ) ( ) [ 5 ]
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