Using double derivatives to show/find the nature of a stationary point?

[VCE_2012]

Are specialist students (or students who know about it) are permitted to use double derivatives to show/find the nature of a stationary point?
To what extent are students allowed to apply their specialist skills into methods? 

[Bhootnike]

Are specialist students (or students who know about it) are permitted to use double derivatives to show/find the nature of a stationary point?
To what extent are students allowed to apply their specialist skills into methods?

yea, and you can use uni maths if you want to according to someone who got 50 and 42 in methods/spesh respectively that I asked the same question to.

[FlorianK]

Are specialist students (or students who know about it) are permitted to use double derivatives to show/find the nature of a stationary point?
To what extent are students allowed to apply their specialist skills into methods?

Yes, you are allowed to. However I don't really think it's faster and secondly it doesn't always work e.g. x^4. Using second derivative test won't give you an advantage

[Bhootnike]

Are specialist students (or students who know about it) are permitted to use double derivatives to show/find the nature of a stationary point?
To what extent are students allowed to apply their specialist skills into methods?

Yes, you are allowed to. However I don't really think it's faster and secondly it doesn't always work e.g. x^4. Using second derivative test won't give you an advantage

well, if its a nice question, its much faster!
however as seen in the vcaa 2009 exam 2, question 2, they might be nasty and make it so d^2y/dx^2 = 0 :p
so best to know both techniques i guess

[BigAl]

I hate it when a question restricts you to use a specific way. Everyone thinks differently and so everyone can derive their own methods. What's the purpose of this restriction? I don't understand. Maths is logical way of interpreting things..but vcaa sometimes makes it something pointless.

[Bhootnike]

 ^ amen

[Jenny_2108]

Are specialist students (or students who know about it) are permitted to use double derivatives to show/find the nature of a stationary point?
To what extent are students allowed to apply their specialist skills into methods?

Yes, you are allowed to. However I don't really think it's faster and secondly it doesn't always work e.g. x^4. Using second derivative test won't give you an advantage

well, if its a nice question, its much faster!
however as seen in the vcaa 2009 exam 2, question 2, they might be nasty and make it so d^2y/dx^2 = 0 :p
so best to know both techniques i guess

I don't understand what both of you are talking about = = Just have a look vcaa 09 Ex2, q2 and dunno where are x^4 and dy^2/d^2x

[Bhootnike]

Are specialist students (or students who know about it) are permitted to use double derivatives to show/find the nature of a stationary point?
To what extent are students allowed to apply their specialist skills into methods?

Yes, you are allowed to. However I don't really think it's faster and secondly it doesn't always work e.g. x^4. Using second derivative test won't give you an advantage

well, if its a nice question, its much faster!
however as seen in the vcaa 2009 exam 2, question 2, they might be nasty and make it so d^2y/dx^2 = 0 :p
so best to know both techniques i guess

I don't understand what both of you are talking about = = Just have a look vcaa 09 Ex2, q2 and dunno where are x^4 and dy^2/d^2x

Um.
florian and I werent speaking of the same question
The question I am talking about was such that if you found the second derivative, and subbed in the given value, it = 0. making the second derivative inconclusive.