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Core Pure: further calculus

Quick questions on Differential equations: integrating factor, auxiliary equation, SHM and damping - OCR A-Level Further Maths A

2short 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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State the integrating factor for dydx+3y=x\dfrac{dy}{dx} + 3y = x. [1 mark]
What is q2?
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Write the general solution of x¨+9x=0\ddot{x} + 9x = 0. [2 marks]

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