Hi I was just wondering what do you mean by not including the end points at 6:19
@integralacademics
14 күн бұрын
The endpoints of any graph cannot be differentiated. Conditions of differentiability at a point: 1. Point must be continuous 2. Point must be smooth (approaches same gradient from left or right side) 3. Must not be an endpoint The reason for the endpoint condition is because we don’t know what’s going on after that point. In order to know about the gradient at a point, we must know what’s happening before and after the point. Hope this makes sense.
@jefftoney4682
2 ай бұрын
Over here 16:16 would you of have needed to mention the domain for the inverse function or not? I think you need to or else you lose a mark
@integralacademics
2 ай бұрын
Yes, you’re right.
@xxxq1460
3 ай бұрын
Are you allowed to use the DI integration by parts method (as shown in 16:58) in the exam to show working out? Or will one get marked down?
@integralacademics
3 ай бұрын
I believe it should be fine. VCAA usually says that if you get the correct answer and any valid method you will likely get all the marks.
@mahirmohammed9616
3 ай бұрын
is math methods more of intrperetig the quetion anf typing it into a calculator?
@integralacademics
3 ай бұрын
Exam 2 tends to be a lot like this, whereas exam 1 is tech-free, so no calculator.
@jimm9465
9 ай бұрын
MCQ 10: A.
@camerondole1561
9 ай бұрын
For ER Q6f the answer needs to be rounded up to 11.633. If you use the value of 11.632 in Q5ei) then you get a p value that is less than 0.01 so you would reject H0 with a value of 11.632. I asked the head of math at VCAA this question about a few questions in trial exams and was told that students needed to be aware of the context when rounding. I always tell my students to substitute their value back into the original equation to make sure that it "works" and in this case 11.632 does not "work".
@perkinsons6913
10 ай бұрын
what would you need for 38ss i got 35/40 ex1 and 69 exam 2
@integralacademics
10 ай бұрын
That would be about 36-39
@tonytan5945
10 ай бұрын
@@integralacademics What would you say is the minimum to get a 40?
@integralacademics
10 ай бұрын
@@tonytan5945 Maybe 36/40 Exam 1 and 72/80 exam 2 give or take in each exam. Pretty hard to tell
@manni24347
10 ай бұрын
I went okish in exam 1 25+ish, and or have been above the median scores in school sacs. But exam 2 was horrible was for me. What scores would I need in exam 2 to get a 25 ss in spec?
@integralacademics
10 ай бұрын
~45-50/80
@integralacademics
10 ай бұрын
Very last question shaded area shouldn’t be bounded by H0
@fitzi4537
10 ай бұрын
omg i struggled so hard 😢79/80
@integralacademics
10 ай бұрын
It’s okay. ATAR doesn’t matter, there are millions of pathways to get into your course.
@sairaplaxs632
10 ай бұрын
What will a 31/40 translate to?
@integralacademics
10 ай бұрын
I think a B+
@One_of_the_jp
10 ай бұрын
In my arab shcool my exam is very hard and with calculator u will have 2 😢😢
@p.fanalyst3760
10 ай бұрын
Could 29/40 get me a B+?
@integralacademics
10 ай бұрын
I think that may be a high B but if you’re lucky possibly a B+
@perkinsons6913
10 ай бұрын
what do yoh think A+ range is?
@integralacademics
10 ай бұрын
36-40
@fitzi4537
10 ай бұрын
i got 40/40 😂
@equzia7524
10 ай бұрын
piss exam (i got 2/40)
@integralacademics
10 ай бұрын
Well done!
@perkinsons6913
10 ай бұрын
what score do you think 6 marks lost on Exam 1 and 8 marks lost on Exam 2 would give?
@integralacademics
10 ай бұрын
~45-46 raw
@cynical458
8 ай бұрын
update?
@perkinsons6913
8 ай бұрын
@@cynical458 34 ex 1 71 ex 2 41 ss school fucked my sacs over
@electrovortex7178
4 ай бұрын
update??
@perkinsons6913
4 ай бұрын
lost 6m ex 1 9m ex 2 got a 41 w 90% sac avg
@glianna5105
10 ай бұрын
Omd I got 100% such an easy exam 🥵
@jjhb2620
9 ай бұрын
hey - are you in year 12 next year? i have some free resources i'm giving away if you're interested.
@saisiddarthvarmanadempalli6705
10 ай бұрын
what do u reckon a decent score on this exam would be considering the difficulty
@integralacademics
10 ай бұрын
My guess is that 65-80 A+
@Mannyb10383
10 ай бұрын
🤓☝🏾 I got all the questions right
@jjhb2620
9 ай бұрын
hey - are you in year 12 next year? i have some free resources i'm giving away if you're interested.
@shifanzhang3307
10 ай бұрын
Hi, thanks for sharing this! I have a question regarding Section 2 Question 2 and the last question, which is find all possible values of n, but when you write your solution as n=5(6k+1), why is k an integer not all real numbers? Could you please explain this? Thank you!
@dodorox876
10 ай бұрын
Hi, K must be an integer and not all real numbers, as if it was all real numbers (for example, 32.5627), then the values of n would no longer be complimentary, and could equal anything at all, rather than specific solutions. Hope that helped
@integralacademics
10 ай бұрын
If you think about the graph y=5(6x+1), if x is an element of real then y can be any real number. Likewise if k is all real then n could be anything but we only want n to be the specific solutions
@shifanzhang3307
10 ай бұрын
Thank you! but I have another question. I put h(40+n)=135 into the cas and I can get n=5(6p+1), however, when I solve the same equation by hand, I actually got n=5(6p-5), why is that? @@integralacademics
@integralacademics
10 ай бұрын
@@shifanzhang3307 They both would output the same values of n. That is because 6p+1 means every number 1 more than 6p (or every number more than a multiple of 6) Now 6p-5 means every number 5 less than 6p (or every number 5 less than a multiple of 6) which is the multiple of 6 below the one from 6p+1. Another way to think about it is if p is all integers, then p-1 is also all integers. So I can write 6p+1 as 6(p-1)+1 or 6p-6+1 or 6p-5
@KaranSingh-et6mg
10 ай бұрын
You are so good at maths
@jjhb2620
9 ай бұрын
hey - are you in year 12 next year? i have some free resources i'm giving away if you're interested.
@habibi_sport312
6 ай бұрын
Yes please bro.@@jjhb2620
@fitzi4537
10 ай бұрын
he’s done it again 😮💨 amazing
@jjhb2620
9 ай бұрын
hey - are you in year 12 next year? i have some free resources i'm giving away if you're interested.
@integralacademics
10 ай бұрын
Q20 of the MCQ should be A The very last question should be 43.91, because the lower bound is 2.48 and the upper bound should be 8.78 (not 6.962)
@glianna5105
10 ай бұрын
Omg wtf it actually makes sense now 😭
@glianna5105
10 ай бұрын
Wow you make it look so easy
@user-gx9qj6mi2q
10 ай бұрын
thanks for this man, can u upload the exam 2 solutions tmrw aswell please?
@integralacademics
10 ай бұрын
I’ll try to upload tomorrow, otherwise maybe Friday
@natnaelayano512
10 ай бұрын
On question 1b u forgot to put it into a single fraction. I did the same during the exam. Would I lose a mark for not doing for probly not simplifying?
@integralacademics
10 ай бұрын
You definitely don’t need to as they didn’t specify a particular form.
@saisiddarthvarmanadempalli6705
10 ай бұрын
Absoulute legend for posting them soo quick how much would u rate this exam out of 10 compared to last years
@integralacademics
10 ай бұрын
I think the questions aren’t bad this year, just the numbers are quite tough to work with so overall it’s slightly harder than last year.
@lynxisbae3943
10 ай бұрын
i got 78%, fucking stuffed up all those massive number calculations i spent way to much time trying to find them rather than simplifying at the beginning lmao
@fitzi4537
10 ай бұрын
amazing solutions 🎉
@perkinsons6913
10 ай бұрын
Hey do you think exam 2 will be hard and will you be doing solutions for them and spesh too?
@integralacademics
10 ай бұрын
I think it will be a middle-level difficulty exam but impossible to know. I will be uploading my solutions to Methods 2 and Specialist exams!
@sleepingemu6162
10 ай бұрын
why is it when i watch u do it its easy, but when i have to do it by myself im shit
@Ready13
10 ай бұрын
Legit 💀
@sleepingemu6162
10 ай бұрын
i did absolutely shit
@underneathmelbourne7493
10 ай бұрын
me too bro
@jaydengilbert5648
10 ай бұрын
Good to see im bad at math lol
@KaranSingh-et6mg
10 ай бұрын
These are the best methods solutions I’ve seen. Thanks for explaining the concepts so well
@jaydengilbert5648
10 ай бұрын
Whered you pull the 1.96 from in MC Q10?
@integralacademics
10 ай бұрын
1.96… is the z value for a 95 confidence interval. The z value for a 95% confidence interval can be found by doing invNorm((1-0.95)/2,0,1) on the CAS This is because on a standard normal distribution Pr(-z<Z<z)=0.95 so Pr(Z<-z)=(1-0.95)/2 Likewise for any other percentage confidence interval. For your exams, it would be useful to put down different z values for different confidence intervals on your bound reference such as the 90%, 95% and 99%
@jaydengilbert5648
10 ай бұрын
@@integralacademics Thanks mate, just doing some last minute cramming
@integralacademics
10 ай бұрын
@@jaydengilbert5648 Best of luck!
@ngthuyanh111
Жыл бұрын
You can also do fMax(d(s(t)/dt,t) to avoid double derivative
@ngthuyanh111
Жыл бұрын
Great video! Thanks for sharing
@jack_mcnally.05
Жыл бұрын
thanks you very much
@dongillies8610
Жыл бұрын
in q9 Secn A they used the terms minimum distance and distance interchangeably. The two are NOT one and the same thing. The answer given, x+1, is plain wrong. x+1 is the distance, not the minimum distance. Minimum distance has only one value; the distance that is least out of all possible values of distance. There is not (well, should not be) an infinite number of values for minimum distance. Of course the distance from the origin to the moving point (x,y) is measured along a straight line. This has been taught to students since maths began and goes without saying. The same weird confusion of min distance with actual distance was displayed again in q3 b iii Secn B
@integralacademics
Жыл бұрын
I agree with you that the wording in this question is horrendous. Never have I seen them use wording like this before. Rather, I was trying to make sense of what they meant by “minimum distance” which I think they said to highlight that the “minimum” or “shortest” possible distance from point A to B is straight through. By the answers, it’s obvious they meant just “distance” and have referred to this straight distance as just “distance” for pretty much all previous exams and to teach students. Not too sure why they decided to word it this way…
@dongillies8610
Жыл бұрын
@@integralacademics Indeed. And if the two terms meant the same thing, there would be no need for two different terms
@randomGuyrulz
Жыл бұрын
Hey great solutions I did the same thing you did for 1e, in extended response for b in terms of a. But some people differentiated with respect to b rather than a and got b=2a^2. I am not sure which one is right?
@integralacademics
Жыл бұрын
Thanks! I think both are correct since it’s a multivariable function so you can differentiate in terms of either one. You will probably get the mark :)
@randomGuyrulz
Жыл бұрын
@@integralacademics Hopefully, cause I was worried for that question. Thanks!
@scottgayyrison8401
Жыл бұрын
@@randomGuyrulz Yo nah i got the same as you, should be fine these solutions also got b=2a^2 www.itute.com/wp-content/uploads/2022-VCAA-Mathematical-Methods-Exam-2-Solutions.pdf
@samabdi9461
Жыл бұрын
maths asmr 😂😂😂 just kidding haha great content keep it up 👍😁😁
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