**Applied Maths 2012 Before/After**

paddyhes

aarond280 wrote: »

Thanks it did, that what happens when you rush into the question and dont read it properly

Yeah, at this stage hardest part is getting a balance of timing and not rushing

aarond280

paddyhes wrote: »

Yeah, at this stage hardest part is getting a balance of timing and not rushing

Yeah I know ah I just kind of jumped in without thinking, Applied Maths requires a lot of thinking :P

paddyhes

aarond280 wrote: »

Yeah I know ah I just kind of jumped in without thinking, Applied Maths requires a lot of thinking :P

Yeah. If ya make the slightest slip it will take you off into a horrible place full of unsolvable equations :L

aarond280

paddyhes wrote: »

Rearrange the impact so their centres are horizontal from each other.

If you want me to do it out i can but im not sure how to upload it :L

Yeah asked my teacher how to that, she told me but she said they don't come up so hopefully it doesm't

paddyhes

aarond280 wrote: »

Yeah asked my teacher how to that, she told me but she said they don't come up so hopefully it doesm't

Ah i wouldn't really care.
Comfortable enough with Q5 (apart from that earlier incident with the ''-V1'' fiasco :L).
I'd like a nice 2, 3 and 7 and should be fine after that fingers crossed :L

aarond280

paddyhes wrote: »

Ah i wouldn't really care.
Comfortable enough with Q5 (apart from that earlier incident with the ''-V1'' fiasco :L).
I'd like a nice 2, 3 and 7 and should be fine after that fingers crossed :L

What questions are you doing other than 2,3,7, and 5
I'm doing 1,2,3,4,,5 and 10 and might do 8 if i've time

paddyhes

aarond280 wrote: »

What questions are you doing other than 2,3,7, and 5
I'm doing 1,2,3,4,,5 and 10 and might do 8 if i've time

1,2,3,4,5,7 and 10.

Probably do 1 or 10 first :P

aarond280

question 7 is that shm ??
yeah ten will probably bi first for me

paddyhes

aarond280 wrote: »

question 7 is that shm ??
yeah ten will probably bi first for me

Nope 7 is statics.
6 is shm.
If i get REALLY stuck i might give hydrostatics(9) a bash. :P

aarond280

paddyhes wrote: »

Nope 7 is statics.
6 is shm.
If i get REALLY stuck i might give hydrostatics(9) a bash. :P

yeah i think i might just them all :rolleyes: haha joke. i was going to do statics and then never found the time :mad:

paddyhes

aarond280 wrote: »

yeah i think i might just them all :rolleyes: haha joke. i was going to do statics and then never found the time :mad:

7 is alot like 4 but it never accelerates (obviously cause its statics :L)
so all you need to do the question is:
Sum of forces in vertical = 0
Sum of forces in horizontal = 0
Take moments about an appropriate point :P

If you can do 4 you could definitely do part a of 7 :P
But i'd say sticking to your questions at this point would be a better option :L

aarond280

paddyhes wrote: »

7 is alot like 4 but it never accelerates (obviously cause its statics :L)
so all you need to do the question is:
Sum of forces in vertical = 0
Sum of forces in horizontal = 0
Take moments about an appropriate point :P

If you can do 4 you could definitely do part a of 7 :P
But i'd say sticking to your questions at this point would be a better option :L

Yeah i might do it if i have time ( a lot of time) and looked over the other questions.
and sum forces = 0 is that just like moments and that from physics ?

_Bella_

For q8 are there only 3 theorems that can come up?

aarond280

_Bella_ wrote: »

For q8 are there only 3 theorems that can come up?

yeah

paddyhes

aarond280 wrote: »

Yeah i might do it if i have time ( a lot of time) and looked over the other questions.
and sum forces = 0 is that just like moments and that from physics ?

Yeah it's basically the laws of equilibrium for a system
In physics we do co-planer forces so they're all in a line but unfortunately its not that simple with applied maths :L

aarond280

paddyhes wrote: »

Yeah it's basically the laws of equilibrium for a system
In physics we do co-planer forces so they're all in a line but unfortunately its not that simple with applied maths :L

It never is :L
jus wondering when you have to find the angle through the sphere is reflected in collisions is there another way to find the angle other taking it away from 180', I know that isnt explained well but you know what I mean :P

paddyhes

aarond280 wrote: »

It never is :L
jus wondering when you have to find the angle through the sphere is reflected in collisions is there another way to find the angle other taking it away from 180', I know that isnt explained well but you know what I mean :P

When i have to find the angle its deflected i usually just get the angle before, angle after, and then just draw a quick diagram to make sure i dont mess it up, and just add or subtract to get what i need :P

DoodleMe

Just wondering, what book do you guys use for am?

paddyhes

DoodleMe wrote: »

Just wondering, what book do you guys use for am?

Fundamental Applied Mathematics Second Edition
:P

Pepperr

"Applied Mathematics" By Dominick Donnelly, its the book we got at the start of 5th year but we never used it..

SD021

Absolutely bricking it for tomorrow. If Q10 is too weird I'll actually start crying. Was going for an A1 before the leaving started but if I was offered an A2 now I'd run :L Hope to **** it's a nice paper..

DoodleMe

I'm thinking of taking am up next year, is the course big/does it take long to cover it in one year? (provided I would be doing it as much as other subjects)

paddyhes

DoodleMe wrote: »

I'm thinking of taking am up next year, is the course big/does it take long to cover it in one year? (provided I would be doing it as much as other subjects)

Not really.
Depends how good you are.
If you're strong at maths and physics then you should be fine.

DoodleMe

paddyhes wrote: »

Not really.
Depends how good you are.
If you're strong at maths and physics then you should be fine.

I currently do both HL maths and physics, I enjoy maths and don't have any problems with the maths involved in physics. Is applied maths much harder than the maths side of physics? Also is there any overlap between maths and app maths?

paddyhes

DoodleMe wrote: »

I currently do both HL maths and physics, I enjoy maths and don't have any problems with the maths involved in physics. Is applied maths much harder than the maths side of physics? Also is there any overlap between maths and app maths?

Yeah the maths in physics is a joke really how simple it is.
Its not really the maths in applied maths that's difficult its recognizing what you have to do with the figures you're given to solve the problem.
Well at least that's my opinion :P
Only in question 10 really.
Linear acceleration from physics is Q1 (your formula v=u+at and all that).

DoodleMe

paddyhes wrote: »

Yeah the maths in physics is a joke really how simple it is.
Its not really the maths in applied maths that's difficult its recognizing what you have to do with the figures you're given to solve the problem.
Well at least that's my opinion :P
Only in question 10 really.
Linear acceleration from physics is Q1 (your formula v=u+at and all that).

Yeah the maths in physics is handy enough, do you enjoy the subject yourself? :P I really enjoy maths, I find it easy to study, that's why I'm really considering applied maths

123Laura

Anyone know how they get the answer for the second part of the projectiles question in the 2005 paper? In the marking scheme I can't seem to follow the trig as they skip a few steps towards the end when the first half of the range formula goes from sin2x to 2cos2x.

Anyone know how they they manipulated it to get that!? Helppp pleasee

http://www.examinations.ie/archive/markingschemes/2005/LC020ALP1EV.pdf

paddyhes

DoodleMe wrote: »

Yeah the maths in physics is handy enough, do you enjoy the subject yourself? :P I really enjoy maths, I find it easy to study, that's why I'm really considering applied maths

Yeah I'm going on to do mathsy/physicsy course in college hopefully.
Yeah it's alot easier than most subjects cause you just practice it (this is maths now).
Once you understand all the underlying principles and the physics behind the maths you're doing in applied maths its very easy to practice as well.
Yeah if you're good at maths and physics you should give it a go anyways :P
you'll always have your other 7 subjects to fall back on if it doesn't work out :P
Unless your school offers it as i subject :P :L

paddyhes

123Laura wrote: »

Anyone know how they get the answer for the second part of the projectiles question in the 2005 paper? In the marking scheme I can't seem to follow the trig as they skip a few steps towards the end when the first half of the range formula goes from sin2x to 2cos2x.

Anyone know how they they manipulated it to get that!? Helppp pleasee

http://www.examinations.ie/archive/markingschemes/2005/LC020ALP1EV.pdf

Are you asking how they changed sin2x to 2cos2x?
Cause that's just differentiating sin2x with respect to x

123Laura

oh dear jesus I am far too tired to be doing maths, didn't cop it they'd started the derivation there have been trying to work out how on earth sin2x=2cos2x for a solid 20 minutes. Thanks