Urgent Help: Maths ...look at this thread (1 Viewer)

[bing005]

Hey can some really smart person do an analysis of past papers (Eg 94-04) and tell me what types of questions always come up... It would help me heaps cause i would know what to study....

Thanks dudes!

 

[MuffinMan]

just do the past papers...then u'll be fine

 

[MuffinMan]

edit: im screwed for maths extension, lucky it doesnt count...i dunno lol

 

[Slidey]

It would be more beneficial for you to do the analysis yourself: you can understand the questions better that way, as well as get practice doing them.

If anybody does do one, be sure to post it here.

 

[bing005]

Mate im the worst possible studier ever..... i really need some smart person to do it.....i got 24% in my trials

 

[bing005]

theres not enought time to do it myself...... i left it to late ..... hehehehehe

 

[rama_v]

Well,
The last questions gonna involve differentiation and minimisation/maximisation
There's always co-ordinate geometry (like equation of lines and intersections etc. )
Geometry is in virtually every paper, usually they like to pick simlar triangles
Trig is always there too
Simple Integration and Differntiation is usually question 2 or 3 but it comes up in other areas as well, sometimes these are not so easy. e.g. rates
Simple algebra - Question 1
The questions towards the end tend to focus on appliactions of calculus to the physical world and applications of series (i.e. supperannuation, time payments etc.)

 

[Meldrum]

Yeah, Rama's right.

But also: if you get stuck, JUST THINK LOGICALLY! Draw construction lines, think outside the square (or circle as it's likely to be).

 

[jemsta]

normally trig functions like finding the area of a sector etc will be either number 9 or 10....time repayments, superannuation and compound interest
btw has anyone done the 1989 paper?? tell me what u think

 

[switchblade87]

Trig for the past 3 or so years has made up something like 25% of all the marks (30/140), so know all your trig!

 

[chinkyeye]

hey can ne1 explain how to find nature of stat. poitns..stuff like that..cos ireally don't get it...cos i was doing this uqestion right..and i found da second derivative equal to zero, doesn't that mean point of inflexion occurs... i dunno but tha answer said it was a minimum..please educate me

 

[rama_v]

Please post up the question

where f''(x) = 0, an inflexion point exists
where f''(x) >0, that point is concave up and therefore a minimum
where f''(x) <0, that point is concave down and therefore a maximum

EDIT: Like word pointed out beloe the first point f''(x) = 0 does not necessarily mean that an inflexion point exits, it merely means that there is the possibility of an inflexion point. My bad, sorry.

 

[word.]

no.
f"(x) = 0 means theres a possible point of horizontal inflextion
you still have to check the gradient on both sides to verify that it is an inflexion

take f(x) = x⁴ for example
f"(0) = 0, but we know f(x) = x⁴ is a parabola
f'(-1) = -1, f'(0) = 0, f'(1) = 1 hence the shape \ _ / i.e. minimum

 

[chin music]

no.
f"(x) = 0 means theres a possible point of horizontal inflextion
you still have to check the gradient on both sides to verify that it is an inflexion

take f(x) = x⁴ for example
f"(0) = 0, but we know f(x) = x⁴ is a parabola
f'(-1) = -1, f'(0) = 0, f'(1) = 1 hence the shape \ _ / i.e. minimum

Ye i learnt that one the hard way. But ye u gotta prove it

 

[goan_crazy]

This is going to be my worst exam. Why can't maths be like legal?
If I pass, ill be over the moon!

 

[rama_v]

no.
f"(x) = 0 means theres a possible point of horizontal inflextion
you still have to check the gradient on both sides to verify that it is an inflexion

take f(x) = x⁴ for example
f"(0) = 0, but we know f(x) = x⁴ is a parabola
f'(-1) = -1, f'(0) = 0, f'(1) = 1 hence the shape \ _ / i.e. minimum

yeah, thats right, sorry bout that - Dont do what I did in an exam!

 

[DeanM]

there is ALWAYS exponential growth and decay,
cosine / sine rule
bearing
differentiation cos, sin, tan
probability

no doubt they'll be in there

 

[chinkyeye]

and either loan repaments, superanutaion