Mathematics 9709 · AS & A Level · Differentiation

Differentiation — practice question

The curve has equation $y = \cos^3 x\sqrt{\sin x}$. It is stated that there is exactly one stationary point for the curve in the interval $0 < x < \frac{1}{2}\pi$.
(main)[6]

Determine the $x$-coordinate of this stationary point, correct to $3$ significant figures.

Worked solution & mark scheme

This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: Differentiate using the correct product rule and chain rule

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