Mathematics 9709 · AS & A Level · Integration

Integration — practice question

The diagram illustrates a section of the curve $y = -x^2 + 8x - 10$ that goes through the points $A$ and $B$. The curve reaches a maximum at $A$, and the gradient of line $BA$ is $2$.
(i)[7]

Find the coordinates for $A$ and $B$.

(ii)[4]

Find $\int y \, dx$ and hence determine the area of the shaded region.

Worked solution & mark scheme

This 11-mark question has a full step-by-step worked solution and mark scheme. One marking point: Differentiates to obtain $\frac{dy}{dx}=-2x+8$

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