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A function represents a quantity. For example the function s = (6t² + 4t) m, could represent displacement. The unknown t is inputted to find the displacement an object travels at a certain t...

This problem is a graphical representation of finding the solutions to a pair of simultaneous equations.

In this example we will use the curves y=2x² , and y=x²+1. T...

How you should approach a question of this type in an exam
Say you are given two lines: L₁ and L₂ with equations and you are asked to deduce whether or not they...

Here we will use:

cot(x) = cos(x)/sin(x)

cosec²(x) = 1 + cot²(x)

Chain rule : dy/dt * dt/ dx = dy/ dx

Product rule : d/dx (...

dy/dx represents the gradient of a curve. The d represents an infinitesimally small range so it is essentially as though you are doing change in y over change in x like you would for a y = mx +c graph ...