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Edexcel D1 - 17th June, 2016 [Exam discussion] watch

1. Praying scheduling without a Gantt chart doesn't come up...that video is great though.
2. (Original post by willmotg)
Praying scheduling without a Gantt chart doesn't come up...that video is great though.
If anything it might lower the boundaries?
3. (Original post by Student403)
If anything it might lower the boundaries?

With any luck
4. Hopefully a Gantt chart comes up but not scheduling. Think I will cry if scheduling comes up

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5. (Original post by iMacJack)
Hopefully a Gantt chart comes up but not scheduling. Think I will cry if scheduling comes up

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"Schedule these activities using the minimum number of workers"

?????????????????
6. (Original post by Student403)
"Schedule these activities using the minimum number of workers"

?????????????????
Man I know, I will honestly have a breakdown
7. (Original post by Student403)
"Schedule these activities using the minimum number of workers"

?????????????????
It's time-consuming, but the video posted above is a great tutorial - basically, if you have a choice then use the activity with the lowest finish time, but always check that it works when you give it to the first available worker.
8. Can anyone tell me a quick method of how to know whether the region to shade in linear programming is above the line or below the line if you're given 6x + 5y <= 60
9. (Original post by splashywill)
Can anyone tell me a quick method of how to know whether the region to shade in linear programming is above the line or below the line if you're given 6x + 5y <= 60
X>5
X<5

Just shade the opposite to what the arrow is saying

Can anyone help me with 6d here. What would be the objective fucntion?
Thanks
11. (Original post by splashywill)
Can anyone tell me a quick method of how to know whether the region to shade in linear programming is above the line or below the line if you're given 6x + 5y <= 60
Take nice points around the line and test them. Eg you know (5,6) is a point (as you can see from drawing the line) so move x like 1 to the right and see that it becomes 36+30 = 66, which isn't right. Move y up one and that gives you 30 + 35 = 65. So can't move y any further up or to the right, so the area is going to be bounded by the line, the x and y axis.
12. (Original post by willmotg)
It's time-consuming, but the video posted above is a great tutorial - basically, if you have a choice then use the activity with the lowest finish time, but always check that it works when you give it to the first available worker.
Thanks, yeah!
(Original post by iMacJack)
Man I know, I will honestly have a breakdown
Chin up mate it's alright! Remember if D1 doesn't go as well as you hoped, you'll still get an A! And getting even 70 UMS in D1 will allow you to get the A* with minimal effort at A2
13. What will we have to prove (for tomorrow)? pls help!
14. (Original post by boyyo)

Can anyone help me with 6d here. What would be the objective fucntion?
Thanks
P = x + 3y
Therefore
30 = x + 3y is the objective line
15. (Original post by boyyo)

Can anyone help me with 6d here. What would be the objective fucntion?
Thanks
I'm not sure on that question as well! Pls let me know if you get the answer for it- the mark scheme isn't clear about it.
16. (Original post by CutieTootsie)
who else has barely done any revision for D1?
Me but I really not need to do D1 as my six other units: Fp1,FP2,D2,S2,S1 and S3 will be better.
17. (Original post by thelegend99)
What will we have to prove (for tomorrow)? pls help!
No proof but definition of a couple like

Matching
Path
Route
Difference between Prim & Kruskal
Why dummies are used
18. (Original post by Pablo Picasso)
No proof but definition of a couple like

Matching
Path
Route
Difference between Prim & Kruskal
Why dummies are used
I saw something where you had to prove the no of valencies that are odd occur in pairs or something?
19. (Original post by Pablo Picasso)
P = 3x + y
Therefore
30 = 3x + y is the objective line
umm, I kinda get what your doing here, could you explain it please?

I was thinking, the cost of y = 3x.
So the total cost would be, 3x+x ?

thelegend99
20. (Original post by target21859)
I did well last year apart from M1 haha. Thanks for the kind words of encouragement. Much appreciated. Still sucks I have D1 and M2 on the same day
I have a clash between Core 4 (AQA) and Decision 1 (Edexcel) with 25% Extra Time C4, 50% extra time in D1. Total exam time 4hrs 13 mins excluding my supervised rest breaks. Really looking forward to tomorrow.

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