Mathematics 9709 · AS & A Level · Integration

Integration — practice question

(i)[5]

Determine the constants $A$, $B$, $C$ and $D$ so that $\frac{2x^3 - 1}{x^2(2x - 1)} \equiv A + \frac{B}{x} + \frac{C}{x^2} + \frac{D}{2x - 1}$.

(ii)[5]

Hence show that $\int_1^2 \frac{2x^3 - 1}{x^2(2x - 1)} \, dx = \frac{3}{2} + \frac{1}{2} \ln\left(\frac{16}{27}\right)$.

Worked solution & mark scheme

This 10-mark question has a full step-by-step worked solution and mark scheme. One marking point: Carry out division by the denominator and leave a quadratic remainder

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