General Thoughts: Mathematics Extension 2 (1 Viewer)

[hscishard]

Ok guys, I get it. I couldn't see the simple crossing out. ><

 

[bobthebuilder94]

anyone gonna write up some solutions, really wanna see how Q8s done, cause for b, i did a shit load of working, that it can be "obviously deduced" that the inequalities are correct, and had like massive fudges haha
Q1:13-14 integration very easy, but made silly mistake in partial fractions, -___- anyone know if i'll get a mark for equating the coeficents and stuff, tbh idk how that partial fraction was done..anyone?
Q2: 15
Q3: 13 -___- wrote pi/2, instead of 2/pi for the limit, the e--> infinity wrote it becomes a rectangular hyperbola tehehhe (silly, cause they have e=sqrt(2)) haha
Q4: 9-11 tangent Q, didn't realise how easy c ii) was -__-
Q5: 8 no clue what reflection property was
Q6: 9 - fk jac and jill
Q7: 10 - I?
Q8: 3-8 - depnding how good my 8b fundge was didn't realise it was easy probability

so total of: 80 ~ 83
:'( thought i;d get a band 6 in ext 2...not anymore

 

[D94]

I reckon I'm sitting on 100/120, hopefully no other stupid mistakes. Not a bad test, imo.

 

[silence--]

idk

i agree with mirakon/whoever else said that the problem was time.

fucking question 3 took like ages, where are all the easy 1 mark graphing questions :/

got like max of 8/15 for q8 (if im lucky)

also i screwed up some easy questions like finding I and shading the wrong region for the locus (fucking lol)

argh.
idk.

at least its over now.

 

[failwhale]

Re: paper

that fucking mech question where u had prove something about halving the speed. WTF???? and question 8..... well i was really close to part a) rest i didn't have enough time

 

[02oxygen]

wow you guys all found it relatively easy?? i did so bad compared to you all..
my hsc is fucked.. but yea it wasnt that hard. just found some question hard.

 

[Pave]

Re: paper

To make all you guys feel better, I personally felt progressively drained as I worked. q7 and 8 share approx 9 marks earned between them, so im hoping for about 85.

Good luck with your results. not point curling up into a ball in depression... we got ext1 to do!.

 

[timting95]

Re: paper

to make all you guys feel better, i personally felt progressively drained as i worked. Q7 and 8 share approx 9 marks earned between them, so im hoping for about 85.

Good luck with your results. Not point curling up into a ball in depression... We got ext1 to do!. :d

agreed!!!

 

[brettymaccc]

anyone gonna write up some solutions, really wanna see how Q8s done, cause for b, i did a shit load of working, that it can be "obviously deduced" that the inequalities are correct, and had like massive fudges haha
Q1:13-14 integration very easy, but made silly mistake in partial fractions, -___- anyone know if i'll get a mark for equating the coeficents and stuff, tbh idk how that partial fraction was done..anyone?
Q2: 15
Q3: 13 -___- wrote pi/2, instead of 2/pi for the limit, the e--> infinity wrote it becomes a rectangular hyperbola tehehhe (silly, cause they have e=sqrt(2)) haha
Q4: 9-11 tangent Q, didn't realise how easy c ii) was -__-
Q5: 8 no clue what reflection property was
Q6: 9 - fk jac and jill
Q7: 10 - I?
Q8: 3-8 - depnding how good my 8b fundge was didn't realise it was easy probability

so total of: 80 ~ 83
:'( thought i;d get a band 6 in ext 2...not anymore

The confusing partial fractions meant you had to get a common denominator with the first two fractions (a/x and b/x^2) of x^2, then simplify the top. So, ax + b/x^2. Then the rest is normal.

 

[bobthebuilder94]

ohhhhh,,, i feel so retarted atm

 

[BobMac]

The confusing partial fractions meant you had to get a common denominator with the first two fractions (a/x and b/x^2) of x^2, then simplify the top. So, ax + b/x^2. Then the rest is normal.

It could have been done another way.
1/(x-1) - 1/x - 1/x^2

 

[rawrence]

Fucked it hard. Mind blank in resisted motion

 

[HyperComplexxx]

Fucked it hard. Mind blank in resisted motion

i know that feel bro...fucked up probabilty
Wasted nearly 10 minute think about resisted motion, vT, v, vO lol couldnt figure out the variables

 

[D94]

The confusing partial fractions meant you had to get a common denominator with the first two fractions (a/x and b/x^2) of x^2, then simplify the top. So, ax + b/x^2. Then the rest is normal.

Erhh...they set it up for you already, so you just needed to do it normally. Combining the first two fractions is unnecessary.

I guess the only way one would think it was confusing, is if they hadn't learned the repeated factors rule/method (but not required by the syllabus).

 

[rawrence]

After that jac and cunting gil question, you guys are talking about the partial fractions q?!

 

[D94]

After that jac and cunting gil question, you guys are talking about the partial fractions q?!

The first two parts were pretty easy (or should I say common if you did Cambridge questions) for the resisted motion; I got part of the last part, but just moved on when I got nowhere with it.

 

[rawrence]

btw, what did you guys get for

?

I got Ln3, think it's totally wrong though

 

[D94]

I got Ln3, think it's totally wrong though

I don't exactly remember, but ln(3) was definitely part of the solution, or at least the working out.

 

[cheezcake]

The first two parts were pretty easy (or should I say common if you did Cambridge questions) for the resisted motion; I got part of the last part, but just moved on when I got nowhere with it.

As if, the first and last part was easy i didnt get anywhere with the second though

 

[brettymaccc]

Erhh...they set it up for you already, so you just needed to do it normally. Combining the first two fractions is unnecessary.

I guess the only way one would think it was confusing, is if they hadn't learned the repeated factors rule/method (but not required by the syllabus).

Well done, but I didn't learn content outside of the syllabus, so I did it the easier way of just getting a common denominator.