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  1. I

    VCE Maths questions help

    $\noindent The range of the piecewise function will be the union of the two ranges posted by kawaiipotato above (the second of which should be written $(-\infty, 1)$ of course.). So the range is $(-\infty,\infty)$, or in other words, $\mathbb{R}$.$
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    Just asking for some guidance?

    It depends what you mean by "matter". It's not like there's a theoretical "ATAR cap" based on your school rank or anything if that's what you were thinking.
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    MATH2111 Higher Several Variable Calculus

    Re: Several Variable Calculus The basic ideas are: - When x = 0 or 1 (the endpoints of the domain), f_n (x) = 0 for every n, so the convergence at these x is clear. - For any given x in (0, 1) (interior of the domain), the fact that exponential decay dominates power function growth yields...
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    Is it even possible?

    Yes. It is even theoretically possible to get 99.95 ATAR with English Standard.
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    Help with inverse integration

    $\noindent Yes, but they don't know how to integrate $\sin^{-1} x$ in 3U. So they would be expected to use other methods.$
  6. I

    VCE Maths questions help

    $\noindent Try sketching the graph of the cubic $y = (x-a)^2 (x+b)$ and deducing the solution to the inequation from that. If you're not sure how to sketch that graph, you should learn this first.$
  7. I

    VCE Maths questions help

    Because the graph was of y = f(x). The solution will be the set of x values for which the curve is below the x-axis.
  8. I

    VCE Maths questions help

    Sketch the graph.
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    Integration Concern, the total area of x^3

    If you want the actual physical area, it's the one using absolute values. The thing that is 0 is the signed area, or net area. If we just say "area" of a function on an interval without saying "signed area" or "net area", we would probably be referring to the physical area, which is always...
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    MATH2601 Higher Linear Algebra

    Re: MATH2601 Linear Algebra/Group Theory Questions No it need not be. Say V = R^2 and W1 = R^2 (= V) and W2 be the line (t, 0) (the x-axis). Take T to be a rotation map by 90 degrees counter-clockwise about the origin say. Then T is a linear map from V to V, so T(V) = T(W1) is a subspace of W1...
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    What would be the lowest ATAR in a cohort in a top 10 selective school?

    "Dropkick" relative to the average at those schools maybe.
  12. I

    VCE Maths questions help

    Yes, the inverse's domain will be the range of the original function.
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    What would be the lowest ATAR in a cohort in a top 10 selective school?

    In fact, the median ATAR at James Ruse last year was 99.2 (mentioned near the bottom of this page: http://www.jamesruse.nsw.edu.au/about/achievements (as at 22 May, 2017)).
  14. I

    VCE Maths questions help

    The slope m is 3, not 1/3.
  15. I

    VCE Maths questions help

    $\noindent Use the fact that if a line with slope $m$ makes angle $\theta$ to the positive $x$-axis, then $\tan \theta = m$.$
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    First Year Mathematics A (Differentiation & Linear Algebra)

    Re: MATH1131 help thread No, that point doesn't affect whether the line will be parallel to the plane.
  17. I

    First Year Mathematics A (Differentiation & Linear Algebra)

    Re: MATH1131 help thread That is correct.
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    VCE Maths questions help

    Did this post by Mahan1 make sense to you?: http://community.boredofstudies.org/12/mathematics/361960/maths-help-please.html#post7240008 .
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    VCE Maths questions help

    No (assuming you draw it yourself, without using a computer to do it or something).
  20. I

    VCE Maths questions help

    Use your knowledge of basic functions. Alternatively, note that the graph is the lower-half of a certain circle.
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