Mathematics 9709 · AS & A Level · Integration

Integration — practice question

The diagram displays the graph of $y = e^{\cos x} \sin^3 x$ for $0 \leq x \leq \pi$, together with its maximum point $M$. The shaded region $R$ lies between the curve and the $x$-axis.
(i)[5]

Find the $x$-coordinate of $M$. Show all necessary working and give your answer correct to 2 decimal places.

(ii)[7]

Using the substitution $u = \cos x$ first, find the exact value of the area of $R$.

Worked solution & mark scheme

This 12-mark question has a full step-by-step worked solution and mark scheme. One marking point: Apply product rule and chain rule at least once

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