Mathematics 9709 · AS & A Level · Integration

Integration — practice question

The diagram displays a segment of the curve with equation $y = 4\sin^2 x + 8\sin x + 3$, where $x$ is measured in radians. The curve meets the $x$-axis at point $A$, and the shaded region is enclosed by the curve together with the lines $x = 0$ and $y = 0$.
(a)[2]

Find the exact $x$-coordinate of point $A$.

(b)[3]

Find the exact gradient at $A$ on the curve.

(c)[5]

Find the exact area enclosed by the shaded region.

Worked solution & mark scheme

This 10-mark question has a full step-by-step worked solution and mark scheme. One marking point: Solve $y=0$ to determine the value of $x$

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