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VCE Stuff => VCE Mathematics => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE General & Further Mathematics => Topic started by: kenhung123 on October 23, 2010, 09:10:30 pm

Title: Anyone done VCAA 2005 Graphs and Relations?
Post by: kenhung123 on October 23, 2010, 09:10:30 pm: I have a particular problem with jii.
The answer says all solutions from (0,60)to (15,40) but (0,60) isn't in the feasible region?
I said from (6,52) to (15,40) coz that's in the feasible region
Title: Re: Anyone done VCAA 2005 Graphs and Relations?
Post by: masonnnn on October 23, 2010, 11:12:28 pm: yeah that got me too,
the key part of the question is "pepi is now allowed to operate each street stand for as many hours as he wants"
so the feasible region is extended all the way to 80 on the y-axis and 100 on the x-axis.
Title: Re: Anyone done VCAA 2005 Graphs and Relations?
Post by: kenhung123 on October 23, 2010, 11:14:08 pm: Hmm? Then doesn't that mean there is no constraints?:S
Title: Re: Anyone done VCAA 2005 Graphs and Relations?
Post by: masonnnn on October 24, 2010, 11:11:37 am: it means the x<64 and y<52 constraints are gone. they were the amount of hours he was able to keep each store open for and they no longer exist.
So Line A and B are still constraints, yet the feasible region is extended above the amount of hours which restricted it
Title: Re: Anyone done VCAA 2005 Graphs and Relations?
Post by: kenhung123 on October 24, 2010, 11:29:55 am: Thanks that is so tricky@
Title: Re: Anyone done VCAA 2005 Graphs and Relations?
Post by: masonnnn on October 24, 2010, 12:41:36 pm: yeah it's so subtly mentioned i didn't pick up on it either, hate when little things like that result in failz.