VCE Maths questions help (2 Viewers)

InteGrand

Well-Known Member
Joined
Dec 11, 2014
Messages
6,109
Gender
Male
HSC
N/A
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.
 

Drongoski

Well-Known Member
Joined
Feb 22, 2009
Messages
4,238
Gender
Male
HSC
N/A
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.
 
Last edited:

boredsatan

Member
Joined
Mar 23, 2017
Messages
572
Gender
Male
HSC
1998
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

Member
Joined
Mar 23, 2017
Messages
572
Gender
Male
HSC
1998
How should I prepare for my maths application task, which is in a week.?
 

Users Who Are Viewing This Thread (Users: 0, Guests: 2)

Top