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Popping in for some remarks and then leaving the conversation. Sylvia is right, IQ is measuring intelligence. The figure can be as high as 80% but 50-70% is probably a more realistic figure for e.g. Devlin et. all (1997) has it has at 49% Chipuer et. all (1990) has 51% Loehlin (1989) has 47%...

Marking Feedback for Q14: (a) Some students had difficulty working out a suitable substitution to manipulate the expression to be \cos3\theta. However some students were able to do the last couple of steps and so were awarded 2 marks for that. (b)(i) While it was not expected to be an exact...

Only quotation marks, first time using them, rest of latex I'm fairly/mostly familiar with. Might add the csquotes package to my standard template though so thanks for the suggestion! TBH not concerned enough about the quotation marks to be bothered to change them this time around, but I'll note...

To answer the first question, not sure. (I didn't penalize it when marking Bos trials) You can use indefinite integrals and then evaluate the initial condition to find the value of the constant. The issue is that t is a variable not a constant. Hence why its not a great idea to do, thankfully...

Hi all, I've posted more detailed markers notes for Q12 and Q14, and a set of solutions (not the official ones but ones I used heavily to mark with, so they may at times differ as they are based on the original set of questions (although I have since adjusted Q12(c), but I have cross checked...

Markers notes and alternative solutions for Q12 for Bored of Studies 2022 MX2 Trials

Markers notes and alternative solutions for Q12 for Bored of Studies 2022 MX2 Trials

yes, but not in time for hsc sorry.

no clue. apparently the domain expired so the site was taken down.

@Trebla Just a quick question about MX2 Q12(c)(i) and (iii) should distance be considered positive or is a negative value ok? Should (i) be d=\frac{|ax+by+cz|}{\sqrt{a^2+b^2+c^2}}

In Q14(a)(i) in Ext 2 paper, x is missing the subscript?

Optimized and decreased file size of these two:

yeah I honestly was reading this paper in a poorly lit room aha. I've fixed it hopefully the last time now.

Yeah thanks for the pickup I had to correct the line before it as well. It's been fixed now.

Thanks @tywebb . I've corrected both SBHS papers and the Shore paper (and have reuploaded it). Yes there isn't a Hunters Hill X2 from this year so its been removed.

23rd September 12:05pm

2022 maths papers are now up. Even if you've already downloaded the lot, please use this log file to download some improved quality copies that are smaller file size.

Fixed copies of Shore 2022 Ext 1 (Q1-12 retyped in Latex to get rid of annotations) and Knox 2022 Ext 1 Expect these + all the selective papers (optimized) for 2unit/Ext 1/Ext 2 on thsc soon (they are uploaded just not indexed yet) @tywebb I'll add a list of other files that I've optimized and...

expecting to find some time probably 28th if not before then.

No 2021 yet, prelim papers are usually a year behind, so the 2020 ones are there.