Analysis and Approaches for IBDP Maths Ebook 1 | Page 165

Front Page
13
Exercise 55
1. Let
f ( x) 1.5x 2x e � �
� � x � .
2 x 2
� � � � , for 5 1
(a) Write down the expression of f� ( x)
.
(b) Find the x -intercepts of the graph of f � .
(c) On the grid below, sketch the graph of f � .
[1]
[3]
[3]
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