Given that
x=8cos23y0<y<π6 x = 8 \cos^2 3y \qquad 0 < y < \frac{\pi}{6} x=8cos23y0<y<6πshow that
dydx=−1ABx−x2 \frac{dy}{dx} = -\frac{1}{A\sqrt{Bx - x^2}} dxdy=−ABx−x21where AAA and BBB are integers to be found.
35 exam-style questions on Edexcel A Level Maths 9.7 Parametric Differentiation. Each one has a worked solution and a mark scheme showing where the marks go.