Apps. and Interpretation for IBDP Maths Ebook 1 | Page 23

4. The diagram below shows the graph of a function f , for �5� x � 4.
3
(a)
(b)
On the same diagram, sketch the graph of
Write down the value of
The range of f is { y : �2 � y � c}
.
f �1 ( � 1)
1
f � .
[3]
[1]
(c) Write down the value of c .
The displacement and the velocity of a car can be modelled by the above function f ,
where x and f( x ) are the displacement and the velocity of the car respectively.
[1]
(d)
Interpret the meaning of
f �1 (2) � 0 .
[1]
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