Parametric Equations - Basics (Edexcel A-Level Mathematics): Quizzes

Functions of a third variable t

A third variable controlling x and y

$\frac{dy}{dx}=\frac{dy/dt}{dx/dt}$

$\int y \frac{dx}{dt} dt$

Written in terms of (x, y) only

Model motion/complex curves

Rearrange one equation for t

Substitute into the other equation

$x=f(t), y=g(t)$

$t=\frac{x-3}{5}$