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VCE Maths questions help (1 Viewer)

InteGrand

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Some questions ask you to state the domain and range of a graph. How do you know weather to state it as open or closed?
If they give you the graph, you can look at it to see if an endpoint is included or not.
 

boredsatan

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If they give you the graph, you can look at it to see if an endpoint is included or not.
So if it was a parabola that had arrows going in each direction would it be infinity and open bracket?
 

Drongoski

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Assuming the natural domain; i.e. largest set of values of x that is allowed. For this question, where presumably we are dealing with a real function, it is all real values except x = -2; when x = -2, you will have a division by zero - which is a Cardinal sin in maths. The corresponding range is all y > 2; i.e. all real numbers greater than 2.
 
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boredsatan

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Assuming the natural domain; i.e. largest set of values of x that is allowed. For this question, where presumably we are dealing with a real function, it is all real values except x = -2; when x = -2, you will have a division by zero - which is a Cardinal sin in maths. The corresponding range is all y > 2; i.e. all real numbers greater than 2.
is there any other domain possible?
 

boredsatan

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How should I prepare for my maths application task, which is in a week.?
 

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