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Awesome! Thank you so much. So for this question "What is the empirical formula for a compound containing 38.8% carbon, 16.2% hydrogen and 45.1% nitrogen." Would it be CNH_4 ?

A compound is found to contain 23.3% magnesium, 30.7% sulfur and 46.0% oxygen. What is the empirical formula for this compound?

Just found it, Mojaku on the 11th of March posted them again in this thread.

Ok, thank you very much

Hi, I have to prove that the ends of a focal chord intersect at right angles on the directrix, though to prove these I need to use the fact that if PQ is a focal chord then, pq=-1. Can I use this in the proof? Or would I have to prove that to? Could I use the knowledge of the equation of...

Is context's any good?

Hi, Is there any particular topics whose questions are asked more in finals for year 11 then other topics? I've noticed that they ask more financial and statistics questions than algebra (not area), is this just something I've seen in a couple of papers or does it resonate throughout most...

Yeah they do, ok will do. Are you allowed to use synthetic division for polynomials? Because I can't find in the syllabus anything about that, only long division.

Ok, thanks. Are you allowed to use abbreviations in circle geometry, or do you need to right the entirety of the theorem out?

I couldn't find it in the syllabus

Hi, In MX1 exams are we allowed to use the auxiliary method? Because it doesn't mention it in the syllabus? Are we allowed to memories and use the equation for a chord PQ, in parametric form, because it also doesn't mention that in the syllabus? I'm sure there is more of these, but I'm not...

Thanks guys, though the site isn't working for me I can't access the MX1 prelim papers

Are they the same ones already on this site?

Hi, I'm trying to find really hard preliminary MX1 exams (solely preliminary no induction, or differentiation of trigonometric functions), though they all seem to be on the same level (the ones I found in the resource section of this forum). Is there any particularly difficult exams that I...

Thank you so much integrand :)

Hi, How do you solve the following types of absolute value inequalities: 1. | f(x) | > | g(x) | (whether it's >, < >=, <= doesn't matter, and where f(x) and g(x) are both functions of x, not constants) 2. 1/(| f(x) |) > 1/(| g(x) |) (same deal as above ^) I know how to solve absolute...

Ok, how do you know if you can quote a result or formula? Will it tell you in the syllabus?

Hi, We've started parametrics and there is a nice formula for finding the equation of a tangent at a point (xx_0 = 2a(y+y_1)) on a parabola. Are we allowed to just use this equation in a question? Or would we have to prove it? My teacher says if we wanted to use it in a question asking to...

What does it mean with the different ATARS next to the different subjects?

Hi, I'm trying to see how well I need to go in my respective subjects to achieve a certain ATAR, as well as what subjects if I improved in would "boost" my ATAR more so than others. What ATAR calculator would you guys recommend? I like the look of the talent 100 calculator...