Let
The diagram shows the graph of the derivative of
The shaded region
- For which values of
is increasing? (1 mark)
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- What is the maximum value of
? (1 mark)
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- Find the value of
. (1 mark)
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- Draw a graph of
for . (2 marks)
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| ii. | |
♦♦♦ Parts (ii) and (iii) proved particularly difficult for students with mean marks of 12% and 11% respectively.
| iii. | ||
♦♦ Mean mark 28%
EXAM TIP: Clearly identify THE EXTREMES when given a defined domain. In this case, the origin is obvious graphically, and the other extreme at
EXAM TIP: Clearly identify THE EXTREMES when given a defined domain. In this case, the origin is obvious graphically, and the other extreme at
| iv. |  |