ATAR Notes: Forum

VCE Stuff => VCE Mathematics => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Mathematical Methods CAS => Topic started by: run-bandit on February 06, 2010, 06:10:16 pm

Title: notation v.2
Post by: run-bandit on February 06, 2010, 06:10:16 pm
if something hits an x axis should we still bother to put it in the form (0,1) or do we put it as just 1?

that is, since we have to use the former method for non intercept points.
Title: Re: notation v.2
Post by: Twenty10 on February 06, 2010, 06:11:06 pm
the (0,1) style for all co-ordinates... just to be safe :)
Title: Re: notation v.2
Post by: QuantumJG on February 06, 2010, 06:40:10 pm
if something hits an x axis should we still bother to put it in the form (0,1) or do we put it as just 1?

that is, since we have to use the former method for non intercept points.

Use (1,0) - your notation is wrong, (0,1) a y-int - since you are representing the x-intercept and the former notation you stated is more mathematically correct.
Title: Re: notation v.2
Post by: the.watchman on February 06, 2010, 08:43:23 pm
Lol yeah!
It's always safest to put the co-ordinates down, I've heard so many differing opinions from different teachers
Title: Re: notation v.2
Post by: TrueTears on February 06, 2010, 08:51:08 pm
Co-ordinates unless specified.
Title: Re: notation v.2
Post by: Ilovemathsmeth on February 07, 2010, 12:20:50 am
Coordinates. Make sure you don't confuse your x,y, an easy mistake to make under exam pressure.
Title: Re: notation v.2
Post by: stonecold on February 07, 2010, 12:25:34 am
depends if it asks for the coordinate or the value of the x intercept, but it is usually the coordinate, as this way some people will stuff it up and put the zero in the wrong spot, and then vcaa assessors will have something to chortle over while they eat their morning tea. :)
Title: Re: notation v.2
Post by: the.watchman on February 07, 2010, 09:02:21 am
This exactly like the issue over exact answers.
They may tell you whether to give an exact or rounded answer (in which case you MUST obey), or they may not say at all (in which case you MUST put an exact value)

Same with co-ordinates, basically give co-ordinates unless they specifically tell you otherwise