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Edexcel A2 D2 Mathematics June 2016 - Official Thread

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Original post by js.int
**** I didnt see the last bit where you calculate 5550 :s-smilie: How many marks was it?


Don't think it would be more than 2 or 3 (only simple calculations), probably haven't lost many marks if you missed it
Original post by js.int
**** I didnt see the last bit where you calculate 5550 :s-smilie: How many marks was it?



2 marks
what did you guys get for the output for each month?
I got 3,3,5,5,3
Questions 1,2,3,4 and 5 were brilliant. Not so much questions 6 and 7 but I couldn't do dynamic programming from day 1 so not too bothered. Only need BB in maths and further maths so asking as I get a C ish should be fine. If I got all 1-5 correct and 2 marks on q6 do you think I can get a C overall??
Original post by lukejoshjames
You needed to use backflow which would reduce the arc by 3 that seemed like it could only be increased by 2.


Oh **** haha cheers
Original post by TrueDAN
- Simplex not optimal because you had -5s?
- Hungarian 248
- Flow one you got a flow Max flow of 62 and proved it with min cut, max flow theorem?
- Gametheory 0 does not equal -4 therefore it stable?
- North west corner method dummy with value 14 so they both are 99?


Wasn't the game theory 0=/=4? Not -4?


Posted from TSR Mobile
For the optimal length in question 1, the boundaries were 113 and 158 right?
Never mind it was -4 i just remembered wrong.


Posted from TSR Mobile
Original post by lukejoshjames
For the optimal length in question 1, the boundaries were 113 and 158 right?

I got 113 and 149
i got that
Original post by anonymous2410
what did you guys get for the output for each month?
I got 3,3,5,5,3


I got the same

Original post by lukejoshjames
For the optimal length in question 1, the boundaries were 113 and 158 right?


Yep
Original post by anonymous2410
I got 113 and 149


Oh wait yeah lol
Original post by lukejoshjames
Oh wait yeah lol


You got 113 and 149 as well?
Reply 233
Avatar for DORI
DORI
1
was the last question just minimising right???
Original post by anonymous2410
You got 113 and 149 as well?


I forget whether I put 149 in the inequality, but I definitely got 113 and 149 in the previous parts, and 149 is definitely a better upper bound than 158.
Reply 235
Avatar for 8752
8752
1
For the question on game theory when it asked you to formulate it as a linear programming problem (the question before you had to put it in the simplex) did it say write your answer as inequalities or equalities??
What were theta values in the stepping stone question?
Original post by Historygcse
What were theta values in the stepping stone question?


3 and 11?
Original post by anonymous2410
3 and 11?


I got that. Was the final solution optimal?
What did you guys get for the profit of the last question? i got 900 something

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