VCE Methods Question Thread!

[charmanderp]

Personally, I felt 10(d) was a bit of an unfair q for methods-only students

*shrugs*

It used really basic trigonometry though...

[pi]

Personally, I felt 10(d) was a bit of an unfair q for methods-only students

*shrugs*

It used really basic trigonometry though...

True, but the way it's used is a very common spesh technique, I'd imagine most methods-only kids wouldn't have seen it in that light.

[Jenny_2108]

It's n + n + n + ... + n, n times. So there's n ns.

so
   
   

[charmanderp]

Personally, I felt 10(d) was a bit of an unfair q for methods-only students

*shrugs*

It used really basic trigonometry though...

True, but the way it's used is a very common spesh technique, I'd imagine most methods-only kids wouldn't have seen it in that light.

You'd be right then - if it gives spesh kids an advantage in terms of saving a few minutes having to organise all of the variables, etc, it is a bit unfair.

[BubbleWrapMan]

I think it's hard for spesh kids to not have an advantage though.

It's n + n + n + ... + n, n times. So there's n ns.

so
   
   

Looks right

[paulsterio]

Personally, I felt 10(d) was a bit of an unfair q for methods-only students

*shrugs*

In my eyes, you can argue that spesh + methods students will have an advantage over methods only students in many, many questions just because they will generally have more experience and better mathematical reasoning skills. they would have seen more "maths" throughout year 12 and that helps with interpretation, speed, accuracy and just a whole bunch of other things. So in the end, I guess it's usually a question of what's on the course and what's not rather than what benefits methods + spesh students and what doesn't.

[paulsterio]

It's n + n + n + ... + n, n times. So there's n ns.

so
   
   

be careful with your notation

never define a variable to be two things, which is what you have done (n x n and n^n)

[BubbleWrapMan]

Okay got it

[TrueTears]

But in the other post, Hutcho said

is the same as , but instead of addition, it's multiplication.

Shouldn't it be

Edit: typo

and just to clarify yes most of the time we just omit the indices simply coz of laziness or coz its obvious what they are, in those cases (which is most of the time especially in statistics), as long as the notation is understandable then it's okay

[dfgjgddjidfg]

if tan(theta)=1/2, how do you know what sin and cos(theta) equal

10(a)


10(b)


10(c)


10(d)

[Jenny_2108]

It's n + n + n + ... + n, n times. So there's n ns.

so
   
   

be careful with your notation

never define a variable to be two things, which is what you have done (n x n and n^n)

and just to clarify yes most of the time we just omit the indices simply coz of laziness or coz its obvious what they are, in those cases (which is most of the time especially in statistics), as long as the notation is understandable then it's okay

so who is right? :O

if tan(theta)=1/2, how do you know what sin and cos(theta) equal

draw the triangle out

[TrueTears]

It's n + n + n + ... + n, n times. So there's n ns.

so
   
   

be careful with your notation

never define a variable to be two things, which is what you have done (n x n and n^n)

and just to clarify yes most of the time we just omit the indices simply coz of laziness or coz its obvious what they are, in those cases (which is most of the time especially in statistics), as long as the notation is understandable then it's okay

so who is right? :O

what do you mean? theres nothing to compare...?

[Jenny_2108]

^ so should we write like this

or can we just write



because Paul said we should be careful with notation.

[TrueTears]

im not too sure on what pauls post means

but anyways like i said it doesnt matter it's not important if its obvious what the indices are:

eg, a sample space of n, then for any bar{X} its pretty obvious the indices are from 1 to n

[e^1]

Quick question:

Write down the derivative of as a hybrid function.

The answer is:



Though I agree with it, why is it (and not )? Isn't it not differentiable at when due to the modulus?
(Note the question is also in MAV 2008 Exam 2)