VCE General & Further Maths Question Thread!

[IntelxD]

The answer is A. You need to recognise the similarity that exists between the two triangles which may not be apparent at first. Whilst there are a few ways to do this, the first thing I thought of was to reflect the lower triangle in the vertical axis to setup a diagram where you have angles between parallel lines. From here, it should be easy to recognise the equality that exists between the angles (alternate angles) in the triangles and thus the similarity between the two.

[RazzMeTazz]

Thanks for all the help everyone! Yes the answer is A

(Sorry I forgot to post the answer alongside the question! )

[RazzMeTazz]

I'm a bit unsure of how to do this question (Attached below) I don't really know which length you need to first find by using Pythagoras' theorm to figure out length BG?

Would it be from Point B to the middle of line DC?

Any help would be great!

The answer is 415cm

[MightyBeh]

I'm a bit unsure of how to do this question (Attached below) I don't really know which length you need to first find by using Pythagoras' theorm to figure out length BG?

Would it be from Point B to the middle of line DC?

Any help would be great!

The answer is 415cm

You need to find GC, which is the same as .

If that doesn't help, here's the rest:

Spoiler

Measurements are in centimetres








Same thing with BG, but I'm too lazy to type it out (sorry! <3)

[@#035;3]

Hi, do you guys reckon it's worth doing ITUTE exams?
Cheers.

[MightyBeh]

Hi, do you guys reckon it's worth doing ITUTE exams?
Cheers.

Haven't tried them myself, but skimming through their 2014 batch makes me think that they might stray a bit from the course. Probably good to do if you have nothing else left, but otherwise I'd steer clear.

(Also, they don't write questions for all the modules?)

[RazzMeTazz]

For the following contour map (image attached below) to find the horizontal distance between points A and B would I measure either the red line or the pink line with my ruler? (Before using the scale to convert this value to the distance in reality)

Any help would be great!

[BakedDwarf]

For the following contour map (image attached below) to find the horizontal distance between points A and B would I measure either the red line or the pink line with my ruler? (Before using the scale to convert this value to the distance in reality)

Any help would be great!

Red line.

[@#035;3]

Hi guys.
With Q 3 f(i) (VCAA 2012 Exam 2) in the examiners report, they say -"Alternatively, the ‘sliding line’ method could be used".
I got the question correct; but what is the 'sliding line' method?
Cheers.

[BakedDwarf]

Hi guys.
With Q 3 f(i) (VCAA 2012 Exam 2) in the examiners report, they say -"Alternatively, the ‘sliding line’ method could be used".
I got the question correct; but what is the 'sliding line' method?
Cheers.

what module is this?

[RazzMeTazz]

Can someone please explain how to do this question? (attached below)

The correct answer is D

[@#035;3]

Graphs and relations

[MightyBeh]

Can someone please explain how to do this question? (attached below)

The correct answer is D

There's probably a more accurate method, but I just drew a diagram.

That angle to the south is slightly less than the one to the north, so we know the line MP will end a little closer to that side when the sides OM and OP are the same length (note: I don't think they're the same in my diagram ).

[StupidProdigy]

Also you can just sub in a random magnitude for each line. To make it simple just let both lines have a length of one. Then set up a diagram like mightybeh

[Peanut Butter]

Hi guys.
With Q 3 f(i) (VCAA 2012 Exam 2) in the examiners report, they say -"Alternatively, the ‘sliding line’ method could be used".
I got the question correct; but what is the 'sliding line' method?
Cheers.

Pretty much you rearrange the objective function until you have an equation in terms of y. Then using your ruler (this is why this technique is rarely use as it can be inaccurate), you slide your ruler across the feasible region (with it angled according to the equation you found), where the last point your ruler touches is the max/min value. For maximising, you begin sliding ruler from bottom left corner to top right, for minimising you start sliding ruler from top right to bottom left... does that make sense??