1000 13 . The derivative of f is given by f �( x) � � 500x
, where x � 0 . The graph of
2 x f passes through the point P ( 2 , 600 ) .
( a ) Find an expression for f( x ).
[ 5 ] The point Q is a point on the positive x -axis with x -coordinate q . The area of the triangle OPQ is 1500 , where O is the origin .
( b ) Write down the value of q . [ 1 ]
© SE Production Limited 18 All Rights Reserved 2021