## Archive for the ‘2017 Maths’ Category

### FREE download: 2017 VCAA Specialist Mathematics Exam 2 Solutions

Wednesday, November 15th, 2017

Thanks to Gavin Rogers for pointing out a mistake in Q4f, the correct answer is b=-(a+4)+2Im(a) i

Thanks to Pablo Kucz for a simpler answer to Q4f, b = – 4 – conjugate of a

### FREE download: 2017 VCAA Mathematical Methods Exam 2 Solutions

Saturday, November 11th, 2017

Thanks to Cameron Dole for pointing out the following mistakes. Quote: “MC17 is D not B. Option B has both methods of turning an area below graph to positive (placing neg in front and swapping limits) so they cancel out and give a negative value. Option D doubles the area from a to b (due to symmetry as f(x)=f(-x)) and then doubles area from b to 0 but uses b+c to get 0 as well as placing neg in front.
Q3f I agree with working but both CAS and a manual factorisation gives me 7p^2(p-1)^4(2p+3) which does nor expand to your answer. Then of course answers to both parts of 3g are incorrect as a consequence.”

Also thanks to Raymond Rozen of RMIT University and Linda Harland for pointing out the mistakes and providing feedback.

### FREE download: 2017 VCAA Specialist Mathematics Exam 1 Solutions

Saturday, November 11th, 2017

Thanks to Emma Mullane of McKinnon S.C. and Trang Pham for pointing out a mistake in Q6, arcsin(x) should be squared.

### FREE download: 2017 VCAA Mathematical Methods Exam 1 Solutions

Wednesday, November 8th, 2017

### FREE download: 2017 VCAA Further Mathematics Exam 2 Solutions

Wednesday, November 8th, 2017

Thanks to Frank Ngari for pointing out four mistakes in the solutions.
Matrices Q3a should be ( 0.4 0.4 0.2 0.2) times column matrix ( 300 200 200 3000) and the answer is 320.
Geometry and measurement Q2a should be Tokyo is 2 hours behind hence the time is 8.00 pm on Wednesday.
Q2c radius should be 6400cos 43 = 4681km.
Q3b should be length of major arc hence the perimeter is 438 and not 266.

### FREE download: 2017 NSW ESA Mathematics Extension 1 Solutions

Monday, November 6th, 2017

Thanks to Lyn Harris for checking the solutions and providing feedback. Lyn has been supporting us for many years. We greatly appreciate her professional contributions.

### FREE download: 2017 VCAA Further Mathematics Exam 1 Solutions

Sunday, November 5th, 2017

Thanks to Bill Yuan and Kelvin Rogash for pointing out that B is the correct answer to both Q8 and Q22.

### FREE download: 2017 NSW ESA Mathematics General 2 Solutions

Friday, November 3rd, 2017

Thanks to Lyn Harris for checking the solutions and providing valuable feedback.

### FREE download: 2017 NSW ESA Mathematics Extension 2 Solutions

Monday, October 30th, 2017

2017 NSW ESA Mathematics Extension 2 Solutions 2 – PDF 158 KB

Thanks to Lyn Harris for checking the solutions and providing valuable feedback

### FREE Download: 2017 Further Mathematics Year 12 Financial Modelling

Monday, October 16th, 2017