Date | May 2021 | Marks available | 2 | Reference code | 21M.1.AHL.TZ2.5 |
Level | Additional Higher Level | Paper | Paper 1 | Time zone | Time zone 2 |
Command term | Estimate | Question number | 5 | Adapted from | N/A |
Question
Roger buys a new laptop for himself at a cost of . At the same time, he buys his daughter Chloe a higher specification laptop at a cost of .
It is anticipated that Roger’s laptop will depreciate at a rate of per year, whereas Chloe’s laptop will depreciate at a rate of per year.
Roger and Chloe’s laptops will have the same value years after they were purchased.
Estimate the value of Roger’s laptop after years.
Find the value of .
Comment on the validity of your answer to part (b).
Markscheme
(M1)A1
[2 marks]
(M1)
A1
Note: Award M1A0 for in place of .
[2 marks]
depreciation rates unlikely to be constant (especially over a long time period) R1
Note: Accept reasonable answers based on the magnitude of or the fact that “value” depends on factors other than time.
[1 mark]
Examiners report
Syllabus sections
-
18M.1.AHL.TZ1.H_9c:
Sketch the graph of showing clearly the position of the points A and B.
-
22M.2.SL.TZ2.5d:
Sketch the graph of against , labelling the maximum point and the -intercepts with their coordinates.
-
22M.2.AHL.TZ2.6f:
Determine the time when the arrow should be released to hit the ball before the ball reaches its maximum height.
-
18M.2.AHL.TZ2.H_10c:
Sketch the graph of for t ≤ 0. Give the coordinates of any intercepts and the equations of any asymptotes.
-
19M.2.AHL.TZ2.H_4a:
Sketch the graphs and on the following axes for 0 < ≤ 9.
-
22M.2.AHL.TZ2.7e:
Use the model to calculate the total amount of time when fishing should be stopped.
-
22M.1.SL.TZ2.9a:
Write down one feature of this graph which suggests a cubic function might be appropriate to model this scenario.
-
17M.1.SL.TZ1.T_15a:
Write down the value of .
-
22M.2.SL.TZ1.1d:
For the first year of the model, find the length of time when there are more than hours and minutes of daylight per day.
-
17M.1.AHL.TZ1.H_6a:
Sketch the graphs on the same set of axes.
-
18N.2.SL.TZ0.T_4a:
Sketch the graph of y = f (x), for −4 ≤ x ≤ 3 and −50 ≤ y ≤ 100.
-
17M.1.SL.TZ1.T_15c:
Write down the second -intercept of the function.
-
17N.2.AHL.TZ0.H_10d:
This region is now rotated through radians about the -axis. Find the volume of revolution.
-
18M.1.AHL.TZ2.H_10b.ii:
Sketch the graph of . State the equations of any asymptotes and the coordinates of any intercepts with the axes.
-
18M.2.AHL.TZ2.H_10d.ii:
Show that + β < −2.
-
17M.1.SL.TZ2.T_14b:
Use your graphic display calculator to find how long it will take for Jashanti to have saved enough money to buy the car.
-
22M.1.AHL.TZ2.10b:
Solve .
-
22M.2.SL.TZ2.3c:
Find the coordinates of .
-
22M.2.SL.TZ2.4d:
By considering the graph of , determine the length of time during one revolution of the Ferris wheel for which the chair is higher than the cowboy statue.
-
22M.2.SL.TZ2.5e:
Determine the maximum amount of coffee the cafe can make that will not result in a loss of money for the morning.
-
22M.2.AHL.TZ2.6e:
Determine the two positions where the path of the arrow intersects the path of the ball.
-
18N.2.SL.TZ0.T_4b.iii:
Use your graphic display calculator to find the equation of the tangent to the graph of y = f (x) at the point (–2, 38.75).
Give your answer in the form y = mx + c.
-
21N.2.SL.TZ0.3f.ii:
The wind speed increases. The blades rotate at twice the speed, but still at a constant rate.
At any given instant, find the probability that Tim can see point from his window. Justify your answer.
-
21N.2.SL.TZ0.3e.ii:
Find the time, in seconds, that point is above a height of , during each complete rotation.
-
22M.1.SL.TZ2.12a:
Determine an equation for the axis of symmetry of the parabola that models the archway.
-
22M.1.SL.TZ2.12b:
Determine whether the crate will fit through the archway. Justify your answer.
-
21N.2.SL.TZ0.3c.i:
Write down the amplitude of the function.
-
21N.2.SL.TZ0.3e.i:
Find the height of above the ground when .
-
21N.2.AHL.TZ0.2d:
Sketch the function for , clearly labelling the coordinates of the maximum and minimum points.
-
21N.1.AHL.TZ0.10a:
Find .
-
18M.1.AHL.TZ2.H_2a:
Sketch the graphs of and on the following axes.
-
16N.2.SL.TZ0.T_6b:
Express this volume in .
-
17M.1.AHL.TZ1.H_6b:
Given that the graphs enclose a region of area 18 square units, find the value of b.
-
18N.2.SL.TZ0.T_4b.i:
Use your graphic display calculator to find the zero of f (x).
-
17M.1.SL.TZ2.T_14a:
Write down the amount of money Jashanti saves per month.
-
17M.2.SL.TZ2.T_6f:
Write down the number of possible solutions to the equation .
-
19M.2.SL.TZ1.T_4b.ii:
State the domain of .
-
19M.1.AHL.TZ1.H_8d:
Sketch the curve , 0 ≤ ≤ 5 indicating clearly the coordinates of the maximum and minimum points and any intercepts with the coordinate axes.
-
18M.2.AHL.TZ2.H_10a.ii:
With reference to your graph, explain why is a function on the given domain.
-
17M.2.AHL.TZ1.H_12e:
Find the inverse function and state its domain.
-
17M.1.AHL.TZ1.H_11a.ii:
Factorize .
-
18M.2.AHL.TZ2.H_10a.i:
Sketch the graph of for .
-
17M.2.SL.TZ2.T_6d.i:
Write down the -coordinates of these two points;
-
17M.2.SL.TZ2.T_6a:
Write down the -intercept of the graph.
-
17M.2.SL.TZ2.T_6c.ii:
Find .
-
18M.1.AHL.TZ2.H_10b.i:
Express in the form where A, B are constants.
-
18M.2.AHL.TZ2.H_10a.iii:
Explain why has no inverse on the given domain.
-
17M.1.AHL.TZ1.H_11e:
Sketch the graph of .
-
17M.2.AHL.TZ1.H_12c:
Explain why is an even function.
-
16N.1.AHL.TZ0.H_3b:
find the value of .
-
21M.2.SL.TZ1.2i:
The endpoints of the minute hand and hour hand meet when .
Find the smallest possible value of .
-
18N.2.SL.TZ0.T_4b.ii:
Use your graphic display calculator to find the coordinates of the local minimum point.
-
16N.2.AHL.TZ0.H_5b:
State the range of .
-
17M.2.SL.TZ2.T_6c.i:
Show that .
-
17M.1.AHL.TZ1.H_11d:
Hence find the value of if .
-
17N.2.AHL.TZ0.H_10a.i:
Show that the -coordinate of the minimum point on the curve satisfies the equation .
-
19M.1.AHL.TZ1.H_8a:
Write down the -coordinate of the point of inflexion on the graph of .
-
17M.1.SL.TZ2.T_14c:
Calculate how much extra money Jashanti needs.
-
19M.2.SL.TZ1.T_4e:
This straight road crosses the highway and then carries on due north.
State whether the straight road will ever cross the river. Justify your answer.
-
17M.2.AHL.TZ1.H_12g.ii:
Hence, show that there are no solutions to .
-
18M.1.AHL.TZ2.H_10c:
The function is defined by , for ≥ 0.
State the domain and range of .
-
17N.1.AHL.TZ0.H_6a:
Sketch the graph of , showing clearly any asymptotes and stating the coordinates of any points of intersection with the axes.
-
18M.1.AHL.TZ1.H_9b.i:
Show that there is exactly one point of inflexion, B, on the graph of .
-
18M.1.AHL.TZ2.H_2b:
Solve the equation .
-
18M.1.AHL.TZ1.H_9a:
The graph of has a local maximum at A. Find the coordinates of A.
-
17M.1.AHL.TZ1.H_11a.i:
Express in the form .
-
17M.2.SL.TZ2.T_6d.ii:
Write down the intervals where the gradient of the graph of is positive.
-
16N.2.SL.TZ0.T_6f:
Using your answer to part (e), find the value of which minimizes .
-
16N.1.AHL.TZ0.H_3a:
state the value of and the value of ;
-
17N.2.AHL.TZ0.H_10c:
Find the coordinates of the point on the graph of where the normal to the graph is parallel to the line .
-
17N.2.AHL.TZ0.H_10b:
Sketch the graph of showing clearly the minimum point and any asymptotic behaviour.
-
20N.2.SL.TZ0.S_1a:
Find .
-
20N.1.SL.TZ0.T_2a.i:
State, in the context of the question, what the value of represents.
-
20N.1.SL.TZ0.T_2a.ii:
State, in the context of the question, what the value of represents.
-
20N.1.SL.TZ0.T_2c:
Kaelani has .
Find the maximum number of large cheese pizzas that Kaelani can order from Olava’s Pizza Company.
-
20N.1.SL.TZ0.T_4a.ii:
Write down the coordinates of the local minimum point.
-
17N.2.AHL.TZ0.H_10a.ii:
Determine the values of for which is a decreasing function.
-
17M.1.AHL.TZ1.H_11c:
Show that .
-
20N.2.SL.TZ0.S_1b:
Solve .
-
20N.1.SL.TZ0.T_2b:
Write down the minimum number of pizzas that can be ordered.
-
17M.2.SL.TZ2.T_6g:
The equation , where , has four solutions. Find the possible values of .
-
16N.2.AHL.TZ0.H_5c:
Solve the inequality .
-
17M.2.AHL.TZ1.H_12f:
Find .
-
16N.2.SL.TZ0.T_6e:
Find .
-
17M.2.SL.TZ2.T_6b:
Find .
-
17M.1.SL.TZ1.T_15b:
Find the value of and of .
-
18M.1.AHL.TZ1.H_9b.ii:
The coordinates of B can be expressed in the form B where a, b. Find the value of a and the value of b.
-
17M.2.AHL.TZ1.H_12d:
Explain why the inverse function does not exist.
-
17M.2.AHL.TZ1.H_12g.i:
Hence, show that there are no solutions to ;
-
17N.1.AHL.TZ0.H_6b:
Hence or otherwise, solve the inequality .
-
18M.2.AHL.TZ2.H_10d.i:
Find and β in terms of .
-
17M.2.SL.TZ2.T_6e:
Write down the range of .
-
20N.2.SL.TZ0.S_1c:
The graph of has a local minimum at point .
Find the coordinates of .
-
20N.1.SL.TZ0.T_4a.i:
Write down the zero of .
-
19M.2.SL.TZ1.T_4d:
Find the distance from the centre of Orangeton to the point at which the road meets the highway.
-
19M.1.AHL.TZ1.H_8b:
find the value of .
-
20N.1.SL.TZ0.T_4b:
Consider the function .
Solve .
-
21M.1.SL.TZ1.4c:
The price of gas at Erica’s gas station is per litre. A customer must buy a minimum of litres of gas. The total cost at Erica’s gas station is cheaper than Leon’s gas station when .
Find the minimum value of .
-
19M.2.AHL.TZ2.H_4b:
Hence solve in the range 0 < ≤ 9.
-
18M.1.AHL.TZ2.H_10a:
Find the inverse function , stating its domain.
-
16N.2.SL.TZ0.T_6c:
Write down, in terms of and , an equation for the volume of this water container.
-
16N.2.SL.TZ0.T_6a:
Write down a formula for , the surface area to be coated.
-
16N.2.SL.TZ0.T_6h:
Find the least number of cans of water-resistant material that will coat the area in part (g).
-
21M.1.SL.TZ1.8b:
On day of the fitness programmes Daniella runs more than Charlie for the first time.
Find the value of .
-
18M.2.AHL.TZ2.H_10a.iv:
Explain why is not a function for .
-
16N.2.AHL.TZ0.H_5a:
Sketch the graph of indicating clearly any intercepts with the axes and the coordinates of any local maximum or minimum points.
-
16N.2.SL.TZ0.T_6d:
Show that .
-
17M.2.AHL.TZ1.H_12b:
Sketch the graph of showing clearly the equations of asymptotes and the coordinates of any intercepts with the axes.
-
21M.1.AHL.TZ2.5c:
Comment on the validity of your answer to part (b).
-
17M.2.AHL.TZ1.H_12a:
Find the largest possible domain for to be a function.
-
16N.2.SL.TZ0.T_6g:
Find the value of this minimum area.
-
19M.1.AHL.TZ1.H_8c:
find the value of .
-
18M.2.AHL.TZ2.H_10b:
Show that .
-
17M.1.AHL.TZ1.H_11f:
Determine the area of the region enclosed between the graph of , the -axis and the lines with equations and .
-
17M.1.AHL.TZ1.H_11b:
Sketch the graph of , indicating on it the equations of the asymptotes, the coordinates of the -intercept and the local maximum.
-
21M.2.SL.TZ2.3c:
Determine the first year in which this model predicts the average number of visitors per concert will exceed the total seating capacity of the concert hall.
-
21M.1.SL.TZ1.11c:
Whilst swimming, Scarlett can hear the siren only if the sound intensity at her location is greater than .
Find the values of where Scarlett cannot hear the siren.
-
21M.1.AHL.TZ2.5b:
Find the value of .
-
21N.2.AHL.TZ0.2a.ii:
minimum value of .
-
21N.1.AHL.TZ0.10b:
On the same set of axes draw the graph of , showing any intercepts and asymptotes.
-
21N.2.AHL.TZ0.2b.i:
Find the time, in seconds, it takes for the blade to make one complete rotation under these conditions.
-
21N.2.SL.TZ0.3a.i:
maximum value of .
-
21N.2.SL.TZ0.3a.ii:
minimum value of .
-
21N.2.SL.TZ0.3b.i:
Find the time, in seconds, it takes for the blade to make one complete rotation under these conditions.
-
21N.2.SL.TZ0.3b.ii:
Calculate the angle, in degrees, that the blade turns through in one second.
-
21N.2.SL.TZ0.3c.ii:
Find the period of the function.
-
21N.2.SL.TZ0.3d:
Sketch the function for , clearly labelling the coordinates of the maximum and minimum points.
-
21N.2.SL.TZ0.3f.i:
At any given instant, find the probability that point is visible from Tim’s window.
-
21N.2.AHL.TZ0.2a.i:
maximum value of .
-
21N.2.AHL.TZ0.2b.ii:
Calculate the angle, in degrees, that the blade turns through in one second.
-
21N.2.AHL.TZ0.2c.i:
Write down the amplitude of the function.
-
21N.2.AHL.TZ0.2c.ii:
Find the period of the function.
-
21N.2.AHL.TZ0.2e.i:
Find the height of above the ground when .
-
21N.2.AHL.TZ0.2e.ii:
Find the time, in seconds, that point is above a height of , during each complete rotation.
-
21N.2.AHL.TZ0.2f:
The wind speed increases and the blades rotate faster, but still at a constant rate.
Given that point is now higher than for second during each complete rotation, find the time for one complete rotation.