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  1. C

    james ruse 2019 maths q

    So what you are describing is another way to approach the question. The key idea is establish an relation between "a" and "r" which they just happened to be able to do by dividing area_triangle/area_sector. To put it simply it is just one step of the calculation.
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    james ruse 2019 maths q

    So you should first figure out what it is you don't understand. Is there particular line. Is there theorem that you have forgotten or not aware about. What about an axiom or definition.
  3. C

    question on increasing function

    This question should be straightforward if you understand it. All it is asking is what is the domain of f(g(x)).
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    james ruse 2019 maths q

    The question is quite confusing still. r: smaller radius a: full area (not halved) a/2 = 1/2*r^2*pi/6 => a = r^2*pi/6 => sqrt(a) = r*sqrt(pi/6) There seems to be a mistake in the question.
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    james ruse 2019 maths q

    So the first step would be figuring out what you don't understand regarding the solution. Also you have not defined "a". What is "a"?
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    Burnout during trials and lack of motivation

    So it does not matter what you don't know what to do. In university you can take a wide variety of subjects and figure out what specific field you want to go into. Maybe you could focus on areas you have no knowledge about that. E.g. biomedical or civil. Maybe IT is option. Or if nor IT maybe...
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    prelim math adv q :(

    I didn't use latex
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    prelim math adv q :(

    The syntax of piecewise function function is f(x) = { value1 condition1 { value2 condition2 { . { . { . { valueN conditionN The syntax means if condition1 is satisfied then f(x) will take upon the value of...
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    What should I choose as my reserve subjects for Year 11?

    I see. The point I am trying to get cross it might be worth getting outside your comfort zone. Perhaps the subjects you find hard are actually easy. I actually never felt comfortable with science, however once I found the right resources I realised it was not hard at all.
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    Proof Question - unknown school trial

    ii reminds me of bernoulli inequality. But I am not sure if that is the way
  11. C

    What should I choose as my reserve subjects for Year 11?

    Have you considered math or any science subjects?
  12. C

    Factorials :/

    telescoping sum.
  13. C

    Mathematical Induction

    Unfortunately, often when you want to solve a problem, you don't what approach to take. As a result you just need to give it go. I think key thing to look out for when going through question was trick used. E.g., proof by cases, was an additional theorem used as an lemma As a side note, you...
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    trig question

    So there are two things you need to know. 1) the unit circle definition of the trigonometric functions 2) trig ratios for the special triangles https://www.youtube.com/playlist?list=PL0o_zxa4K1BVkRxCZubMPcCJ5Q5QwZdEM For 2) I have pasted a link. Refer to video 66, 67.
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    Combinatorics Questions

    Stated simply, it is the intuitive idea that if there are a ways of doing something and b ways of doing another thing, then there are a · b ways of performing both actions. https://en.wikipedia.org/wiki/Rule_of_product
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    Combinatorics Questions

    Most questions seem to be employing rule of product axiom. So as a first start apply the axiom.
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    uni ranks

    I do not feel UTS was not honest about the degree me and my classmates. We were doing a data engineering degree. However the head teacher knew nothing about data engineering he seem to specialise in some other areas. The key aspect behind data engineering is ETL. This was never taught...
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    How do I compare two population age distribution datas ? (Stats)

    A lower SD means the data is spread less. If the data is spread less then this will likely mean you will get better estimate of the mean from a sample of data. Remember central limit theorem?
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    How do I compare two population age distribution datas ? (Stats)

    The median is 50 percentile of the data. You cannot calculate it by taking the average Q1, Q3.
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