(a)[2]
State the maximum and minimum possible values of $y$.
(b)[2]
Sketch the graph.
(c)[1]
Hence find the number of solutions of the equation $4\cos 2x + 3 = 2x - 1$ for $0 \leq x \leq 2\pi$.
Mathematics 9709 · AS & A Level · Trigonometry
Trigonometry — practice question
The curve is given by $y = 4\cos 2x + 3$ for $0 \leq x \leq 2\pi$.