Apps. and Interpretation for IBDP Maths Ebook 1 | Page 146

Your Practice Set – Applications and Interpretation for IBDP Mathematics
2. Let f ( x) �3cos(180 x) � 1, for �1� x � 4.
(a) (i) Write down the amplitude of f .
(ii) Find the period of f .
(b) On the following grid sketch the graph of f .
[3]
[4]
3. Let f ( x) �4sin( x � 90 ) , for 0 �x
� 360 .
(a) (i) Write down the amplitude of f .
(ii) Find the period of f .
[3]
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