Analysis and Approaches for IBDP Maths Ebook 1 | Page 166

Your Practice Set – Analysis and Approaches for IBDP Mathematics
2. Let f ( x) �sin x � cos x , for 0�x
� 5.
(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]
x
3. Let f ( x) � sin( e ), for �2� x � 2.
(a) Write down the expression of f� ( x)
.
(b) Write down the coordinates of the minimum point of the graph of f � .
(c) On the grid below, sketch the graph of f � .
[1]
[2]
[3]
158
SE Production Limited