Date | May 2019 | Marks available | 2 | Reference code | 19M.1.AHL.TZ1.H_8 |
Level | Additional Higher Level | Paper | Paper 1 | Time zone | Time zone 1 |
Command term | Find | Question number | H_8 | Adapted from | N/A |
Question
The graph of , 0 ≤ ≤ 5 is shown in the following diagram. The curve intercepts the -axis at (1, 0) and (4, 0) and has a local minimum at (3, −1).
The shaded area enclosed by the curve , the -axis and the -axis is 0.5. Given that ,
The area enclosed by the curve and the -axis between and is 2.5 .
Write down the -coordinate of the point of inflexion on the graph of .
find the value of .
find the value of .
Sketch the curve , 0 ≤ ≤ 5 indicating clearly the coordinates of the maximum and minimum points and any intercepts with the coordinate axes.
Markscheme
* This question is from an exam for a previous syllabus, and may contain minor differences in marking or structure.
3 A1
[1 mark]
attempt to use definite integral of (M1)
(A1)
= 3.5 A1
[3 marks]
(A1)
Note: (A1) is for −2.5.
= 1 A1
[2 marks]
A1A1A1
A1 for correct shape over approximately the correct domain
A1 for maximum and minimum (coordinates or horizontal lines from 3.5 and 1 are required),
A1 for -intercept at 3
[3 marks]