6 . Consider the function f x � x � x � , x� . The graph of f is translated
4 2
( ) 4 3 1 one unit to the right and then stretched vertically with scale factor 3 to form the function gx ( ).
( a ) Express gx ( ) in the form e� .
4 3 2 ax �bx � cx � dx � e , where a , b , c , d ,
( b ) Hence , find the sum of the roots of the equation gx� ( ) 0 .
[ 5 ]
[ 2 ]
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