Comments on: Decision Maths http://www.shsmaths.com Thu, 15 Jul 2010 12:28:59 +0000 hourly 1 http://wordpress.org/?v=3.0 By: Laura C http://www.shsmaths.com/get-help/sixth-form/decision-maths/comment-page-1/#comment-6269 Laura C Fri, 15 Jan 2010 08:33:10 +0000 http://www.shsmaths.com/?page_id=1274#comment-6269 Sorry, can't make it in for first period. Thank you though. Laura Sorry, can’t make it in for first period.
Thank you though. Laura

]]> By: Mrs Tibble http://www.shsmaths.com/get-help/sixth-form/decision-maths/comment-page-1/#comment-6267 Mrs Tibble Thu, 14 Jan 2010 23:04:37 +0000 http://www.shsmaths.com/?page_id=1274#comment-6267 Well done! Don't stay up late! Well done! Don’t stay up late!

]]> By: Megan Conway http://www.shsmaths.com/get-help/sixth-form/decision-maths/comment-page-1/#comment-6266 Megan Conway Thu, 14 Jan 2010 22:55:37 +0000 http://www.shsmaths.com/?page_id=1274#comment-6266 i found the problem the question said find the minimum number of passengers not profit, it makes sense now :) thanks mrs tible i found the problem the question said find the minimum number of passengers not profit, it makes sense now :)

thanks mrs tible

]]> By: Mrs Tibble http://www.shsmaths.com/get-help/sixth-form/decision-maths/comment-page-1/#comment-6264 Mrs Tibble Thu, 14 Jan 2010 21:50:19 +0000 http://www.shsmaths.com/?page_id=1274#comment-6264 Laura, try beginning of period 1. JT Laura, try beginning of period 1. JT

]]> By: Mrs Tibble http://www.shsmaths.com/get-help/sixth-form/decision-maths/comment-page-1/#comment-6260 Mrs Tibble Thu, 14 Jan 2010 20:58:31 +0000 http://www.shsmaths.com/?page_id=1274#comment-6260 Laura, I do have some frees in theory, but they have already been booked. You should have come to your last lesson to get your questions answered. You can see me before school if you want ie 8am, or put them on here. JT Laura, I do have some frees in theory, but they have already been booked. You should have come to your last lesson to get your questions answered. You can see me before school if you want ie 8am, or put them on here.
JT

]]> By: Laura C http://www.shsmaths.com/get-help/sixth-form/decision-maths/comment-page-1/#comment-6259 Laura C Thu, 14 Jan 2010 20:46:24 +0000 http://www.shsmaths.com/?page_id=1274#comment-6259 Hey Miss Tibble, Just wondering if you have any frees in tomorrow morning? Just got a couple of questions on some exam papers I have done. Or I can see you at lunchtime if that is easier. Thanks. Laura Hey Miss Tibble,
Just wondering if you have any frees in tomorrow morning? Just got a couple of questions on some exam papers I have done. Or I can see you at lunchtime if that is easier.
Thanks.
Laura

]]> By: Mrs Tibble http://www.shsmaths.com/get-help/sixth-form/decision-maths/comment-page-1/#comment-6258 Mrs Tibble Thu, 14 Jan 2010 20:18:46 +0000 http://www.shsmaths.com/?page_id=1274#comment-6258 Are you sure there were two? Was one of them on a dashed line and therefore not possible? Are you sure there were two? Was one of them on a dashed line and therefore not possible?

]]> By: Megan Conway http://www.shsmaths.com/get-help/sixth-form/decision-maths/comment-page-1/#comment-6255 Megan Conway Thu, 14 Jan 2010 19:59:24 +0000 http://www.shsmaths.com/?page_id=1274#comment-6255 Thanks that does help, but the answer only says there is one solution when i get two? When I used the vertex method there were two solutions and when I used the ruler method there was one solution, and in the answer booklet there was only one solution, so i’m not sure if I’m doing something wrong? :S do you not get marks for doing a simultaneous equation if you just look at the graph? most of the questions need intergers so most of the time you dont need to do simultaneous equation's? Thanks that does help, but the answer only says there is one solution when i get two?

When I used the vertex method there were two solutions and when I used the ruler method there was one solution, and in the answer booklet there was only one solution, so i’m not sure if I’m doing something wrong? :S

do you not get marks for doing a simultaneous equation if you just look at the graph? most of the questions need intergers so most of the time you dont need to do simultaneous equation’s?

]]> By: Mrs Tibble http://www.shsmaths.com/get-help/sixth-form/decision-maths/comment-page-1/#comment-6247 Mrs Tibble Thu, 14 Jan 2010 17:33:09 +0000 http://www.shsmaths.com/?page_id=1274#comment-6247 Hi Megan, If you need integer solutions and 2 points give the same max or min in the objective function, then give both solutions. The lines are part of the feasible region if they are solid, but not if they are dashed (strict inequality) so if a point is on a solid line, that's fine - a vertex is on 2 lines! You can sometimes just look at the graph - draw an integer grid on it then you can see clearly where the possibilities are. Does that help? Tea Lady Hi Megan,
If you need integer solutions and 2 points give the same max or min in the objective function, then give both solutions. The lines are part of the feasible region if they are solid, but not if they are dashed (strict inequality) so if a point is on a solid line, that’s fine – a vertex is on 2 lines!
You can sometimes just look at the graph – draw an integer grid on it then you can see clearly where the possibilities are.
Does that help?
Tea Lady

]]> By: Megan Conway http://www.shsmaths.com/get-help/sixth-form/decision-maths/comment-page-1/#comment-6246 Megan Conway Thu, 14 Jan 2010 12:36:27 +0000 http://www.shsmaths.com/?page_id=1274#comment-6246 also if it has to be an integer is there any point working it out simultaneously, couldn’t you just look at the graph? also if it has to be an integer is there any point working it out simultaneously, couldn’t you just look at the graph?

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