Mathematics 9709 · AS & A Level · Integration

Integration — practice question

Define $f(x)$ by $f(x) = \dfrac{4 - x + x^2}{(1 + x)(2 + x^2)}$.
(a)[5]

Express $f(x)$ as partial fractions.

(b)[5]

Find the exact value of $\int_0^4 f(x)\,dx$, and give the result as a single logarithm.

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 partial fractions structure $\dfrac{A}{1+x}+\dfrac{Bx+C}{2+x^2}$.

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