Analysis and Approaches for IBDP Maths Ebook 1 | Page 167

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4. Let f ( x) �� cos( e �x ) , for �2� x � 2.
(a) Write down the expression of f� ( x)
.
(b)
Write down the coordinates of the maximum point of the graph of f �
(c) On the grid below, sketch the graph of f � .
[1]
[2]
[3]
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