A curve has the parametric equations
x=2t−1,y=t2−4 x = 2t - 1, \quad y = t^2 - 4 x=2t−1,y=t2−4Find the points where the curve crosses the coordinate axes, giving your answers in exact form.
Find an expression for dydx\displaystyle \frac{dy}{dx}dxdy in terms of xxx, giving your answer in exact form.
717 exam-style questions on Edexcel A Level Maths Differentiation, covering 9.1 Differentiating sin x and cos x, 9.2 Differentiating exponentials and logarithms, 9.3 The Chain Rule, 9.4 The Product Rule, 9.5 The Quotient Rule, 9.6 Differentiating Trigonometric Functions, 9.7 Parametric Differentiation, 9.8 Implicit Differentiation, 9.9 Using Second Derivatives, and 9.10 Rates of Change. Each one has a worked solution and a mark scheme showing where the marks go.