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A2 Unit 4 Applied Mathematics B

Quick questions on Differential equations: forming and solving by separation - WJEC A-Level Maths

3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?
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Form a differential equation for a population growing at a rate proportional to its size PP. [1 mark]
What is q2?
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Solve dydx=3x2y\dfrac{dy}{dx} = 3x^2 y, leaving the general solution in terms of a constant. [3 marks]
What is q3?
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A quantity decays so that dNdt=−2N\dfrac{dN}{dt} = -2N, with N=100N = 100 at t=0t = 0. Find NN. [2 marks]

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