3 . The function f is given by
� 1� x � f( x) � 2 � �
� 1 � 2 x � , 1
x � . 2
( a ) On the diagram below , sketch the graph of f for �3� x � 4.
y
[ 3 ]
4 3 2 1
|
�
3
|
�
2
|
�
1
O
|
1 |
2 |
3 |
4 |
|
|
�
1
|
|
|
|
|
x
� 2 � 3
( b ) For the graph of f , write down
( i ) the equation of vertical asymptote ;
( ii ) the x -intercept . [ 2 ]
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