Edexcel A-Level Maths 2018 Paper 1 Q7 | Integration | Full Step-by-Step Explanation | Exam Prep

👉 Edexcel A-Level Maths 2018 Paper 1 – Question 7
This is an integration question involving the reverse chain rule, where the inner function is a simple linear expression. The main difficulty is not the integration itself, but understanding the wording in the question, particularly phrases like “independent of t” and “inversely proportional”.
📚 Topics needed for this question:
Integration (reverse chain rule)
Inverse proportionality
🎯 What you’ll learn:
✔ How to apply the reverse chain rule with a linear inner function
✔ What “independent of t” means in context
✔ What “inversely proportional” means mathematically
✔ How to translate wording into equations
✔ How to avoid common interpretation mistakes in exam questions
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