Top answers

What is the domain and what is the range

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 functions, the invers...
TH
Answered by Tom H. • Maths tutor
13408 Views

What is a limit

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
TH
Answered by Tom H. • Maths tutor
3975 Views

How does the exchange rate mechanism affect aggregate demand in the UK?

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 value of a ...
TH
Answered by Tom H. • Economics tutor
28231 Views

What are the oxidation numbers of each element in these examples: a) H2SO4 b) N2 c) NH4+

a) H 2 SO 4 ANSWER: H: +1 S: +6 O: -2 b) N 2 ANSWER: N: 0 (all elements not within a compound have an oxidation number of 0 eg I 2 , O 2 , K) c) NH 4 + ANSWER: N: -3 H: +1 (sum of oxidation numbers within co...
GB
Answered by Georgia B. • Chemistry tutor
3033 Views

How to write a 'One effect question?'

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'.......'mean...
MP
Answered by Marius P. • History tutor
2802 Views