HSC Advanced Mathematics Predictions / Thoughts (3 Viewers)

[BillieW]

does anyone remember roughly what details they gave in the cricket question extract and what the question actually was? It’s killing me not knowing, I wanna try it again lmfao

Does anyone remember the investment question? and what did you guys get for the 94th withdrawal?

Both were posted on Sydney Morning Herald. Can't post links......

Although I really think you should focus on your next test. This one is done already and it never helps to look back.

 

[thomson2354]

60000(1.005)^94 - 800(1+1.005+1.005^2.....+1.005^93)

Bold= Geometric series, so u substitute in the formula (a=1, r=1.005,n=93), and then you get your answer i think it was roughly $900, give or take.

I did the exact same calculation in the exam and even now and am getting $191586... could u guys let me know what I'm doing wrong lmao its killing me!!

 

[thomson2354]

Can someone tell what the working out was for the proof for sin tan question?? lmao I felt like an idiot trying to figure it out,,

You had sec and cos on the lhs and u had to make sec into 1/cos. From there u create a common denominator of cos and so will have the fraction (1-cos^2x)/cosx... from there u change the 1-cos^2x into sin^2x and that way u will get sinx (sinx/cosx)= sinxtanx which was on the rhs.

 

[mmmm.]

Here's a set of solutions for today's 2020 Advanced paper.

Let me know if there's any problems or mistakes...

Tysm, btw looking back at it now, the questions weren't that hard, but i made so many stupid mistakes

 

[vivswithluv]

You had sec and cos on the lhs and u had to make sec into 1/cos. From there u create a common denominator of cos and so will have the fraction (1-cos^2x)/cosx... from there u change the 1-cos^2x into sin^2x and that way u will get sinx (sinx/cosx)= sinxtanx which was on the rhs.

oh my god I can't believe I just gave up after making sec into 1/cos.. I should of kept going.. ughhh thanks tho

 

[jojosiwa123]

oh my god I can't believe I just gave up after making sec into 1/cos.. I should of kept going.. ughhh thanks tho

ugh ikr going through this thread makes me so frustrated at every question I could've gotten but only just missed the mark

 

[donutsausage]

wait, so is it 3 roots or inflection points (or something) then?

3 roots for the derivative graph so 3 stationary points

 

[jojosiwa123]

glhf

omg how the fk did you get this already? ahahah i'm about to have a mental breakdown seeing everything I got wrong lmao

 

[demonicblackcat]

glhf

BYEEEEE LMAO im really out here getting a 72 :")))) no more 90 atar rip

 

[Pedro123]

omg how the fk did you get this already? ahahah i'm about to have a mental breakdown seeing everything I got wrong lmao

I'm not sure how right the answers are, seeing as it says 2 for 10 (MCQ) when it's 3, so dw. I haven't checked the other ones though

 

[#RoadTo31Atar]

BYEEEEE LMAO im really out here getting a 72 :")))) no more 90 atar rip

Mood - I got 89 in trials, did well in other schools' practice trials and feel like my raw mark is going to be below 80 on this exam.

 

[lai.9]

BYEEEEE LMAO im really out here getting a 72 :")))) no more 90 atar rip

Lol don't worry this would scale up to a high 80 or maybe a 90 this year cuz everyone found it hard

 

[demonicblackcat]

w

Lol don't worry this would scale up to a high 80 or maybe a 90 this year cuz everyone found it hard

wait actually this just made me feel better HAHAHAH
also some answers were wrong in that pdf so it's more like a 77 B) pls scaling gods do your thing

 

[lai.9]

w

wait actually this just made me feel better HAHAHAH
also some answers were wrong in that pdf so it's more like a 77 B) pls scaling gods do your thing

Ohhh can u tell me what answers were wrong

 

[demonicblackcat]

Ohhh can u tell me what answers were wrong

28a) the answer is like approx 96%, 29b) c=e
aaaaand i think that's all

 

[ItzZoni]

Ohhh can u tell me what answers were wrong

I apologize if I'm wrong but I think question 21 b was differentiated incorrectly as many people got a different answer.

Also, I think the answer for 29 b should be c=e and not c=x/lnx. Can someone confirm?

 

[lai.9]

I apologize if I'm wrong but I think question 21 b was differentiated incorrectly as many people got a different answer.

Also, I think the answer for 29 b should be c=e and not c=x/lnx. Can someone confirm?

THXSSS

 

[lai.9]

I apologize if I'm wrong but I think question 21 b was differentiated incorrectly as many people got a different answer.

Also, I think the answer for 29 b should be c=e and not c=x/lnx. Can someone confirm?

I looked through the hsc discussion page and a lot of people have pointed that out. I'm pretty sure ur right thxss

 

[thinkinghard]

28a) the answer is like approx 96%, 29b) c=e
aaaaand i think that's all

why is it 96%? I also got 81.5%

 

[lai.9]

why is it 96%? I also got 81.5%

I got that as well but I think there's an explanation on why it isn't that on hsc discussion page. Apparently u had to take in account the info of "at least one person" or something.