VCE Methods Question Thread!

[mandy.healy]

yes i am also having trouble with this part too bu on VCAA 2015 question 10 part d. Also thank you for your reply before!

Thank you so much!!! Also, how would you find the area of the Trapezium CEDB on that same picture?

[MB_]

Thank you so much!!! Also, how would you find the area of the Trapezium CEDB on that same picture?

The area of the trapezium in this case is given by \(\frac{b+d}{2}h\) where h=2, b=\(\frac{2}{sin(θ)}\) and d=\(\frac{2-2cos(θ)}{sin(θ)}\) found in the previous question. Once you sub them in you end up with \(\frac{4-2cos(θ)}{sin(θ)}\) which you need to differentiate, make equal to 0 and then solve. Hopefully this helps and if you need me to I can show working to the rest of the question.

[mandy.healy]

omg i totally spaced out and forgot we worked out b and d in the previous question  thank you so much for you help man

[esthertham58]

Hello! Can someone help me with 7 (b)?

I don't really understand the explanations on the solutions. Thanks heaps!

[cookiedream]

Hello! Can someone help me with 7 (b)?

I don't really understand the explanations on the solutions. Thanks heaps!

For this question, I found it easier to use hypergeometric distribution as it is without replacement, like this:

[esthertham58]

For this question, I found it easier to use hypergeometric distribution as it is without replacement, like this:

Oh ok - Thanks !

[MandhreeE]

The min/max questions?

Yes the max/min question sorry for not specifying! thank you

[MandhreeE]

hey guys,

I was just wondering if anyone had any useful tips for using the TI-nspire more effectively during the exam, i know it's a little late to learn but i feel like i'm not really using the main functions in the CAS as i should. I would really appreciate it if some one could give some useful functions to keep in mind during the exam. THANK YOU

[mandy.healy]

Can anyone pleasee explain to me my part c i. is [20/3,10) like how do we know its between there. when i worked it out i found d to equal 20/3 and dont know where to go from there.

[exit]

Am i allowed to use items in the old course (what i learnt in 1/2) to solve problems? WIll i still be awarded full marks? (methods) thx

[exit]

hey guys,

I was just wondering if anyone had any useful tips for using the TI-nspire more effectively during the exam, i know it's a little late to learn but i feel like i'm not really using the main functions in the CAS as i should. I would really appreciate it if some one could give some useful functions to keep in mind during the exam. THANK YOU

Keep different 'Problems' (4.x, 5.x etc.) for different problems so you don't need to overwrite equations and create confusion. Anyway, you should be fine. Ti Master Race. Keep in mind that a large portion of the state are using Casio Classpads which aren't near as efficient as the Ti.

[P.GUAN]

Is there anyway to remember the exact values for sin,cos,tan?

[JellyBeanz]

Is there anyway to remember the exact values for sin,cos,tan?

There are several ways you can remember them. I personally just remember the triangles associated with the exact values in my head, and just quickly sketch them if need be.

[esthertham58]

Hey guys,

Just wanted to ask if we can put tabs on our bound reference?We can highlight stuff too right? What is prohibited for bound reference?

Also I'll been hearing so many things about writing in pens and pencils. So we can do our workout in pencil but the answer should be in pen right? When drawing graphs- it is ok to use pencils right?

Thanks!

[MB_]

Hey guys,

Just wanted to ask if we can put tabs on our bound reference?We can highlight stuff too right? What is prohibited for bound reference?

Also I'll been hearing so many things about writing in pens and pencils. So we can do our workout in pencil but the answer should be in pen right? When drawing graphs- it is ok to use pencils right?

Thanks!

Here are all the rules regarding bound references

Spoiler

Specifications for bound reference

The bound reference must be in book format of A4 size or smaller when closed.
The number of pages is not specified.
Pages must be permanently bound and securely attached to the spine.
There must be a single horizontal or vertical spine.
The bound reference may be:
a textbook
a securely bound lecture pad
a permanently bound student-constructed set of notes without fold-outs
an exercise book.
The form of binding is not specified but it must be secure, and pages must not be readily detachable or designed to be removed. Binding can include cloth, glue, staple, spiral or comb binding.
Students are allowed to:

annotate the material
design their own written index
fold pages
cut page corners
colour code pages
insert dividers into their own sets of notes
firmly attach (for example, by glue, adhesive tape or staples) additional material to pages in the bound reference.
Bound references may be consulted during reading time and throughout the examination.

Bound references must not include:

pages or parts of pages that can be detached from the bound reference during the examination
fold-outs, maps or brochure-style components
removable tabs, post-it notes or other pages or material designed to be detached
forms of collation/binding that are designed to be non-permanent and the content modified by insertion including:
ring-binder folders
plastic A4 sleeves (permanent or removable) from which pages may be removed
manila and similar folders with clip, clamp, slide and metal prong binding of loose-leaf material.