The equation 3 j 6 = 9 can be shown on a function machine by writing out the functions that have been applied to j in the order they happened. BIDMAS means multiplication happens before subtraction.

Such functions are called linear, for reasons that I'll explain soon enough (well, we generally want another condition for linear functions involving scalar multiples of the variable, but I'll ...

Equations and identities An equation is a statement with an equals sign, stating that two expressions are equal in value, for example 3 x + 5 = 11 ...

Liouville's formula for certain class of linear operator equations of order n is derived. The result is applied to solving a linear second order operator equation. A number of examples which ...

Solving equations with light. (Courtesy: iStockphoto/Henrik Jonsson) 3 x + y = 2 x + 3 y = 0 It’s the sort of easy maths problem that you can work out in a few minutes using pencil and paper, but ...

There exists an extensive range of research looking at the teaching and learning of linear equations, resulting in many papers highlighting a range of teaching approaches and illustrating a variety of ...