does 2u maths still count towards my atar? (1 Viewer)

[cutemouse]

No, they wouldn't ask a 2U kid to sketch ln(x)/x unless they were literally being led through how to do it. Same deal with a 3U kid. They have asked it in a 3U exam, albeit it in the form of sketches rather than implicit finding the limit style questions.

Yeah... and how do you find horizontal asymptotes? That right, TAKE THE LIMIT as x--> +/- infinity... and it could well be asked in a 2U exam. ie, find stat points, inflexions, tendencies and hence sketch.

My theory is not misleading, it's exactly just as the book says, i'm just skipping steps.

What? That infinity/infinity = 1 :S

And i was messing with you in the first place.

Yeah right, that's what they all say...

No, your point was that you shouldn't use the ASS method to prove congruency as it never works

No, it SOMETIMES works, and SOMETIMES doesn't. Hence we don't use it.

 

[annabackwards]

Yeah... and how do you find horizontal asymptotes? That right, TAKE THE LIMIT as x--> +/- infinity... and it could well be asked in a 2U exam. ie, find stat points, inflexions, tendencies and hence sketch.

y' = 0 and solve for x. No limits required.

What? That infinity/infinity = 1 :S.

yep, x^n/x^n --> 1 as x-->infinity for obvious reasons =="

Yeah right, that's what they all say...

Wow, you really need to get out. I must make a note to not joke with a recluse.

No, it SOMETIMES works, and SOMETIMES doesn't. Hence we don't use it.

Ah yes, my mistake. But my method works for all cases stated above.

 

[Sakeeee]

infinity/infinity = anything EXPLAINED!

definition of infinity = a large number (WRONG!!! or at least not fully explained)

Infinity, in simpleton terms, means a number that u cbf counting too, after all we're humans. Even computers can't count all the numbers out.

Therefore, for one person infinity might mean 1000000 to them and for another person infinity might mean 10^10000000 Hence if you divide them out, it doesn't have to equal to one.

Another way of putting it might be whats infinity + infinity = infinity.

therefore whats (infinity + 10 x infinity)/infinity=????

yeah what the ...

Anyways the only real important of determining infinity in the 4u course is in graphs.

because you might have a curve such as y=x^2 and y=1/x
and if you were asked to find the multiple of these two curves you would get the (at x=0) 0 x infinity which should give you an undefined answer since 0 can be written as 1/infinity. But u realise y=x should be ur new curve so in this case infinity/infinity = 0.

LOL

 

[annabackwards]

infinity/infinity = anything EXPLAINED!

definition of infinity = a large number (WRONG!!! or at least not fully explained)

Infinity, in simpleton terms, means a number that u cbf counting too, after all we're humans. Even computers can't count all the numbers out.

Therefore, for one person infinity might mean 1000000 to them and for another person infinity might mean 10^10000000 Hence if you divide them out, it doesn't have to equal to one.

Another way of putting it might be whats infinity + infinity = infinity.

therefore whats (infinity + 10 x infinity)/infinity=????

yeah what the ...

Anyways the only real important of determining infinity in the 4u course is in graphs.

because you might have a curve such as y=x^2 and y=1/x
and if you were asked to find the multiple of these two curves you would get the (at x=0) 0 x infinity which should give you an undefined answer since 0 can be written as 1/infinity. But u realise y=x should be ur new curve so in this case infinity/infinity = 0.

LOL

Actually, infinity = "eternity: time without end" ie it is not a number, x-->infinity basically means x increasing indefinitely.

Infinity is only a number in the surreal plane, which i do not need to know in uni maths (or at least not right now)

 

[Sakeeee]

Actually, infinity = "eternity: time without end" ie it is not a number, x-->infinity basically means x increasing indefinitely.

Infinity is only a number in the surreal plane, which i do not need to know in uni maths (or at least not right now)

cool dude explain that to these kids then

 

[annabackwards]

cool dude explain that to these kids then

I know nothing about surreal numbers except for the following facts:

• It exists
• Infinity is a number in it
• The uni maths i need to do for my degree does not require me to know it
• HSC students definitely do not need to know about it

So there's my explanation about what i know about the surreal numbers XD

Wiki seems to know a lot about them: Surreal number - Wikipedia, the free encyclopedia

 

[cutemouse]

Wow, you really need to get out. I must make a note to not joke with a recluse.

Sorry who's a recluse? :S

 

[annabackwards]

Sorry who's a recluse? :S

=='

 

[cutemouse]

=='

Yes Anna, you shouldn't be so fast to become the pot calling the kettle black