plumiForming differential equations: OCR MEI A‑Level Maths questions
OCR MEI A-Level Maths past-paper questions on 7.9 Forming differential equations, 2018–2025, with mark schemes and examiner’s reports where available. Add MadAsMaths questions to your practice, or browse them separately by topic and difficulty.
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All 3 questions on Forming differential equations, as a list
- June 2023, Paper 2, Q11 (6 marks): In this question you must show detailed reasoning. d is directly proportional to the square root of x. y The variables x and y are such that x d d = . y When x
- June 2022, Paper 3, Q6 (8 marks): A hot drink is cooling. The temperature of the drink at time t minutes is T °C. The rate of decrease in temperature of the drink is proportional to ( T 20 ) . -
- November 2021, Paper 1, Q11 (11 marks): A balloon is being inflated. The balloon is modelled as a sphere with radius x cm at time t s. The 4 r volume V cm3 is given by V x3 . = 3 The rate of increase
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