Edexcel A-Level - October 2020 - Advanced Pure Mathematics 1 - Question 10 - Exam Paper Walkthrough

Full walkthrough answer to Question 10 on the Edexcel A-Level Mathematics, Pure Mathematics 1, Paper 1, October 2020.
Use the substitution x = u^2 + 1 to show that the integral of 3 dx / (x - 1)(3 + 2root(x - 1) = integral 6 du / u (3 + 2u)
where p and q are positive constants to be found.
(b) Hence, using algebraic integration, show that the integral = ln a
where a is a rational constant to be found.
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