9709 P12 - Jun 2025 - Q5
4102
The equation of a curve is \(y = 4 \cos 2x + 3\) for \(0 \leq x \leq 2\pi\).
- State the greatest and least possible values of \(y\).
- Sketch the curve.
- Hence determine the number of solutions of the equation \(4 \cos 2x + 3 = 2x - 1\) for \(0 \leq x \leq 2\pi\).
Solutions locked. Please sign in with access to view them.