2009 Further Maths [Exam 2]: Worked Solutions!

[magnum]

The moment we've all been waiting for...

Worked Solutions from itute


EDIT: Revised solutions, now without errors

[stonecold]

Question 4, Graphs and Relations is incorrect.

The point (2,7) should be used in the objective function P=1300x+2100y. This then gives maximum profit of $17300.

[magnum]

Question 4, Graphs and Relations is incorrect.

The point (2,7) should be used in the objective function P=1300x+2100y. This then gives maximum profit of $17300.

Yea i just picked up on that now, i think they're wrong on that one

(btw i didnt make these solutions lol)

[Ilovemathsmeth]

They made a mistake in Geometry too. The area of the pentagon is 1548 cm squared. They use heron's formula incorrectly assuming side OP is 30 cm, but it is 25.52, as proved from past question.

[ashok]

For that networks question i wrote all the vertices that are vistited twice instead of 5. Will they except that?

[Zoe]

For question 4d in networks, I assumed that there had to be a dummy activity connecting B to L since the network has to give a LST of 5 and clearly can't if B is on the critical path.
Anyone else do this?

[lucyk]

with the volume removed one- wouldn't you say that 30cm was removed so work it out like (30/50)^3??

[monty711]

Yay, that means according to the itute solutions I got 38/40 on Exam 1 and 86/90 on exam 2

[Hooligan]

They made a mistake in Geometry too. The area of the pentagon is 1548 cm squared. They use heron's formula incorrectly assuming side OP is 30 cm, but it is 25.52, as proved from past question.

YES. I thought I was wrong for a second there, but I was pretty sure my working was right.
PHEW.

[Hooligan]

Yay, that means according to the itute solutions I got 38/40 on Exam 1 and 86/90 on exam 2

/90 for exam 2? I thought it was out of 60....  

.... unless you did all modules..... 

[Ilovemathsmeth]

Hooligan, me too! I looked at that and was like OMG I dropped more marks!! Thank god it's their mistake.