Mathematics 9709 · AS & A Level · Integration

Integration — practice question

Define $f(x) = \dfrac{3x^2 - 4}{x^2(3x + 2)}$.
(i)[5]

Express $f(x)$ as a sum of partial fractions.

(ii)[5]

Hence show that $\int_1^2 f(x)\,dx = \ln\left(\dfrac{25}{8}\right) - 1$, after simplification.

Worked solution & mark scheme

This 10-mark question has a full step-by-step worked solution and mark scheme. One marking point: State or imply the decomposition $\frac{A}{x}+\frac{B}{x^2}+\frac{C}{3x+2}$

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