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To factorise an equation is to put it into (usually two) brackets in the form (x+a)(x+b), where a and b are integers, which multiply out to make the original equation. So whenever you see the word factori...

The domain is a set of all possible values for variables that are input in to a function.

The range of a funciton is a set of values that may be the output of a funciton. 

For one to one fun...

a limit is concerned with how a funciton behaves very close to a certain point.

it is written simply as limf(x) = A, x>a

this means as x approaches a, f(x) equals A

The exchange rate is defined as the value of one currency against another. Aggregate demand (AD) comprises of consumption, government spending, investment and exports minus imports. 

A fall in the ...

GSCE examiners want to see a progression of thought and evidence of argument within these questions. Therefore the best way to tackle this would be to use connective words such as 'the fact that'.......'m...