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Exam 1 Networks Answers
Lyonzy:
i did the matrix thing for question 8 -
0 0 1 1 1
1 0 0 1 1
0 1 0 0 0
0 0 1 0 1
0 0 1 0 0
then squared it and found the dominance vector and got:
4
6*
3
2
1
and hence finding B
Lyonzy:
ps.
1 definitely ain't a tree.... but a stupid question though
kjg:
--- Quote from: "Lyonzy" ---i did the matrix thing for question 8 -
0 0 1 1 1
1 0 0 1 1
0 1 0 0 0
0 0 1 0 1
0 0 1 0 0
then squared it and found the dominance vector and got:
4
6*
3
2
1
and hence finding B
--- End quote ---
oky doky
for startersm you neede to work out the one step dominance
then you must work out the two step dominance, squaring the one step doesn't make you can the two step
then you add one step + two step matrix together, and then you get the answer
=A
maxleng:
--- Quote from: "kjg" ---
--- Quote from: "maxleng" ---mine:
1. B
2. C
3. A
4. B
5. D
6. E (i think VCAA made a mistake here, becuase no direction for the dummy was specified, therefore i didnt know 'which way to go'.... i came to my answer by using the path CDFKL which ends up with 18hrs as the critical path, and activity L with EST:16)
7. C
8. B
9. B (FUCKING GOT THIS WRONG FORGOT TO COUNT THE 1 EXTRA LINE IN THE SECOND COMPETITION AGRHSJFESTFLEWGFSJDHGJGD :evil: )
--- End quote ---
ok 1) isn't B, because you can move one line to make it planar, the answer should b E, it's soooo not a tree
i stuffed up Q5, that was a dodgy question if you r ead it properly
your right with the dummy aspect, the VCAA made a booboo, which made it harder to try and get the right answer, so i think i accidentally did 15, damnit
Q8) i got A, two step dominance, Team A got 7 all up, and Team B got 6, therefore, the answer is A
and then i ran out of time, so i did the "when in doubt choose C" rule, and clearly got it wrong
--- End quote ---
im 100% sure 1) is B, you cannot move any to make it non planar furthermore the aspect which students screwred up last year was complete graphs being non planar... it is a complete graph hence non planar!
8 ) i dont see how ur getting 7, are u following the arrows? i get Team A as 4 and Team B as 6, please check again i am certain i counted it right (i just checked then)
last time VCAA screwed up (last year have a look at examiners report in the Geo bit) they gave all answers as correct... im just hoping it was a mistake becuase ive never seen a dummy activity with no direction
maxleng:
--- Quote from: "kjg" ---
--- Quote from: "Lyonzy" ---i did the matrix thing for question 8 -
0 0 1 1 1
1 0 0 1 1
0 1 0 0 0
0 0 1 0 1
0 0 1 0 0
then squared it and found the dominance vector and got:
4
6*
3
2
1
and hence finding B
--- End quote ---
oky doky
for startersm you neede to work out the one step dominance
then you must work out the two step dominance, squaring the one step doesn't make you can the two step
then you add one step + two step matrix together, and then you get the answer
=A
--- End quote ---
you definatly dont add one and two step dominance, it specificaly asks for the team that had the highest number of two-step dominances
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