We’ve made a few remarks, below, on specific questions, and see this WitCH, but we haven’t gone carefully through the exams. We’ll update with further remarks if and when commenters raise substantive issues with the questions, or either exam as a whole.
EXAM 1 (Here)
Q2. It is interesting that coefficient of friction is in the curriculum even when it isn’t. (It should be.) Both (a) and (b) are poorly worded, and a diagram is really required for (b). (01/09/21) An awful (and common) notational confusion, whether P represents the force (vector) or the magnitude of that force; if, as stated, the latter, than P cannot “act horizontally”, etc.
Q3. This one’s a big problem. Requiring a student to know the mean and standard for the binomial distribution (specific Methods material) in a Specialist exam is simply ridiculous. in private conversation with a teacher, VCAA has attempted to justify this with reference to the Study Design (p 81):
Together [knowledge and skills from Specialist 12, Methods 12 and Methods34] cover the assumed knowledge and skills for Specialist Mathematics, which are drawn on as applicable in the development of content from the areas of study and key knowledge and skills for the outcomes. (emphasis added)
This is nonsense. The specific binomial details are not required for the development of anything in Specialist. It is absurd to suggest that this passage gives license to the exam question, and VCAA should admit that they screwed up (again).
Q4. Q5. The “show that” in (a) is woosy. In (b), to request an answer in the form
is absurd and hilarious.
Q6. Poorly worded.
If its velocity is 4 ms‒1 when x = 0, find its velocity, where v > 0, in metres per second, when x = 2.
It takes a conscious effort to write that badly. (01/09/21) Plus, the quantity v is never defined in the question.
Q9. A debacle. See here.
EXAM 2 (Here)
MCQ2. An interesting and tricky question, presumably destroyed by CAS.
MCQ3. A nice question, but with the options in gratuitously non-obvious form.
Q2. Part (b)(ii) has infinitely many correct answers.
Q5. A berry that, when it falls on an inclined plane, neither bounces nor splatters nor rolls, but just slides? Do not eat.
Q6. More discrete probability. Not egregious in the manner of Q3 on Exam 1, but it shouldn’t be here.