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Differential equations: Edexcel A‑Level Further Maths questions

Every Edexcel A-Level Further Maths exam question on CP.9 Differential equations, 2018–2025, with its mark scheme and examiner’s report.

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824 questions

  1. Q4

    June 2025 · Core Pure 1

    The whole paper ↗
    June 2025 Core Pure 1, question 4: (a) Determine the general solution of the differential equation d d d d e 2 2 3 4 4 2 y x y x y x giving your answer in the form y = f (x) (5) Given that y = 5
  2. Q8

    June 2025 · Core Pure 1

    The whole paper ↗
    June 2025 Core Pure 1, question 8: A rambler starts a walk at the bottom of a hill at 10 am. The rambler walks all the way to the top of the hill and then turns around and walks back down to the
  3. Q5

    June 2024 · Core Pure 1

    The whole paper ↗
    June 2024 Core Pure 1, question 5: A raindrop falls from rest from a cloud. The velocity, v m s –1 vertically downwards, of the raindrop, t seconds after the raindrop starts to fall, is modelled
  4. Q8

    June 2024 · Core Pure 1

    The whole paper ↗
    June 2024 Core Pure 1, question 8: A scientist is studying the effect of introducing a population of type A bacteria into a population of type B bacteria. At time t days, the number of type A bac
  5. Q6

    June 2024 · Core Pure 2

    The whole paper ↗
    June 2024 Core Pure 2, question 6: The motion of a particle P along the x-axis is modelled by the differential equation 2 5 2 4 12 2 2 d d d d x t x t x t where P is x metres from the origin O at
  6. Q6

    June 2023 · Core Pure 1

    The whole paper ↗
    June 2023 Core Pure 1, question 6: Water is flowing into and out of a large tank. Initially the tank contains 10 litres of water. The rate of flow of the water is modelled so that • there are V l
  7. Q9

    June 2023 · Core Pure 2

    The whole paper ↗
    June 2023 Core Pure 2, question 9: A patient is treated by administering an antibiotic intravenously at a constant rate for some time. Initially there is none of the antibiotic in the patient. At
  8. Q3

    June 2022 · Core Pure 1

    The whole paper ↗
    June 2022 Core Pure 1, question 3: (a) Determine the general solution of the differential equation cos sin cos x y x y x x x d d e + = 2 2 giving your answer in the form y = f(x) (3) Given that y
  9. Q10

    June 2022 · Core Pure 1

    The whole paper ↗
    June 2022 Core Pure 1, question 10: θ Figure 3 The motion of a pendulum, shown in Figure 3, is modelled by the differential equation 2 2 d 1 9 cos3 d 2 θ θ t t + = where θ is the angle, in radians
  10. Q6

    November 2021 · Core Pure 1

    The whole paper ↗
    November 2021 Core Pure 1, question 6: A tourist decides to do a bungee jump from a bridge over a river. One end of an elastic rope is attached to the bridge and the other end of the elastic rope is
  11. Q8

    November 2021 · Core Pure 1

    The whole paper ↗
    November 2021 Core Pure 1, question 8: Two different colours of paint are being mixed together in a container. The paint is stirred continuously so that each colour is instantly dispersed evenly thro
  12. Q5

    November 2020 · Core Pure 1

    The whole paper ↗
    November 2020 Core Pure 1, question 5: Two compounds, X and Y, are involved in a chemical reaction. The amounts in grams of these compounds, t minutes after the reaction starts, are x and y respectiv
  13. Q7

    November 2020 · Core Pure 1

    The whole paper ↗
    November 2020 Core Pure 1, question 7: A sample of bacteria in a sealed container is being studied. The number of bacteria, P, in thousands, is modelled by the differential equation ( ) ( ) 1 1 1 2 +
  14. Q3

    November 2020 · Core Pure 2

    The whole paper ↗
    November 2020 Core Pure 2, question 3: A scientist is investigating the concentration of antibodies in the bloodstream of a patient following a vaccination. The concentration of antibodies, x, measur
  15. Q5

    June 2019 · Core Pure 1

    The whole paper ↗
    June 2019 Core Pure 1, question 5:  $WDQNDWDFKHPLFDOSODQWKDVDFDSDFLW\RIOLWUHV7KHWDQNLQLWLDOO\FRQWDLQV OLWUHVRISXUHZDWHU  6DOWZDWHUHQWHUVWKHWDQNDWDUDWHRI
  16. Q8

    June 2019 · Core Pure 1

    The whole paper ↗
    June 2019 Core Pure 1, question 8:  $VFLHQWLVWLVVWXG\LQJWKHHIIHFWRILQWURGXFLQJDSRSXODWLRQRIZKLWHFODZHGFUD\ILVKLQWR DSRSXODWLRQRIVLJQDOFUD\ILVK  $WWLPHt\HDUVWKHQXPEHUR
  17. Q5

    June 2019 · Core Pure 2

    The whole paper ↗
    June 2019 Core Pure 2, question 5: An engineer is investigating the motion of a sprung diving board at a swimming pool. Let E be the position of the end of the diving board when it is at rest in
All 17 questions on Differential equations, as a list
  1. June 2025, Core Pure 1, Q4 (8 marks): (a) Determine the general solution of the differential equation d d d d e 2 2 3 4 4 2 y x y x y x giving your answer in the form y = f (x) (5) Given that y = 5
  2. June 2025, Core Pure 1, Q8 (12 marks): A rambler starts a walk at the bottom of a hill at 10 am. The rambler walks all the way to the top of the hill and then turns around and walks back down to the
  3. June 2024, Core Pure 1, Q5 (9 marks): A raindrop falls from rest from a cloud. The velocity, v m s –1 vertically downwards, of the raindrop, t seconds after the raindrop starts to fall, is modelled
  4. June 2024, Core Pure 1, Q8 (15 marks): A scientist is studying the effect of introducing a population of type A bacteria into a population of type B bacteria. At time t days, the number of type A bac
  5. June 2024, Core Pure 2, Q6 (14 marks): The motion of a particle P along the x-axis is modelled by the differential equation 2 5 2 4 12 2 2 d d d d x t x t x t where P is x metres from the origin O at
  6. June 2023, Core Pure 1, Q6 (12 marks): Water is flowing into and out of a large tank. Initially the tank contains 10 litres of water. The rate of flow of the water is modelled so that • there are V l
  7. June 2023, Core Pure 2, Q9 (14 marks): A patient is treated by administering an antibiotic intravenously at a constant rate for some time. Initially there is none of the antibiotic in the patient. At
  8. June 2022, Core Pure 1, Q3 (6 marks): (a) Determine the general solution of the differential equation cos sin cos x y x y x x x d d e + = 2 2 giving your answer in the form y = f(x) (3) Given that y
  9. June 2022, Core Pure 1, Q10 (14 marks): θ Figure 3 The motion of a pendulum, shown in Figure 3, is modelled by the differential equation 2 2 d 1 9 cos3 d 2 θ θ t t + = where θ is the angle, in radians
  10. November 2021, Core Pure 1, Q6 (12 marks): A tourist decides to do a bungee jump from a bridge over a river. One end of an elastic rope is attached to the bridge and the other end of the elastic rope is
  11. November 2021, Core Pure 1, Q8 (9 marks): Two different colours of paint are being mixed together in a container. The paint is stirred continuously so that each colour is instantly dispersed evenly thro
  12. November 2020, Core Pure 1, Q5 (17 marks): Two compounds, X and Y, are involved in a chemical reaction. The amounts in grams of these compounds, t minutes after the reaction starts, are x and y respectiv
  13. November 2020, Core Pure 1, Q7 (11 marks): A sample of bacteria in a sealed container is being studied. The number of bacteria, P, in thousands, is modelled by the differential equation ( ) ( ) 1 1 1 2 +
  14. November 2020, Core Pure 2, Q3 (14 marks): A scientist is investigating the concentration of antibodies in the bloodstream of a patient following a vaccination. The concentration of antibodies, x, measur
  15. June 2019, Core Pure 1, Q5 (13 marks):  $WDQNDWDFKHPLFDOSODQWKDVDFDSDFLW\RIOLWUHV7KHWDQNLQLWLDOO\FRQWDLQV OLWUHVRISXUHZDWHU  6DOWZDWHUHQWHUVWKHWDQNDWDUDWHRI
  16. June 2019, Core Pure 1, Q8 (18 marks):  $VFLHQWLVWLVVWXG\LQJWKHHIIHFWRILQWURGXFLQJDSRSXODWLRQRIZKLWHFODZHGFUD\ILVKLQWR DSRSXODWLRQRIVLJQDOFUD\ILVK  $WWLPHt\HDUVWKHQXPEHUR
  17. June 2019, Core Pure 2, Q5 (12 marks): An engineer is investigating the motion of a sprung diving board at a swimming pool. Let E be the position of the end of the diving board when it is at rest in

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