If you give me fifteen mins- I'll write up all the answers by hand and scan them- hopefully others can latex some whilst I'm doing them. Also, 4 has more than one answerIs there any chance you can use LaTeX? I find it hard to understand plain text. If you find writing LaTeX difficult, you can get an extension for chrome called "Daum equation editor" to make it easier.
Thank you!
No problem! There was a lot more that I had trouble with in the exam (didn't complete whole last page, 15 marks down the drain).If you give me fifteen mins- I'll write up all the answers by hand and scan them- hopefully others can latex some whilst I'm doing them. Also, 4 has more than one answer
Alright, I got the start of question 1 right in the exam, I got to but then stopped. Will I get any marks for that? Also, I believe I got the domain/range question correct, but I didn't show any working I just stated the domain and range. Will I get ANY marks there?Question 1
But all of this is equal to 1/2, which is the same thing as 2^{-1}
So equating powers of 2:
3x+2 = -1
3x = -3
x = -1
Question 2
Domain: All real x because there are no possible discontinuities or undefined regions.
Range: y >= 0 because it is a quadratic with the vertex on the x axis (specifically at x=-3).
Question 3
Sub the point in and show that LHS = RHS.
2(1) + 3(4) - 14 = 0 = RHS
Question 4
If you draw a sketch, you can clearly see that D will be on the bottom right of the parallelogram.
To get from B to C, we add 2 to the x coordinate and subtract 2 from the y coordinate.
So to get from A to D, we do the same. So D is (2,-2)
D can also be seen to be on the top right, where you apply the same mentality to see that to get from A to C, we add 3 to the x coordinate and 5 to the y coordinate. So similarly to get from B to D, we do the same ie: D is (4,12)
Question 5
You would get maybe 1 mark for doing that, but it really depends on how many marks were allocated to it overall. If it was worth 3, then you would definitely get 1 mark. If worth 2, maybe if you're lucky. If worth 1, then no.Alright, I got the start of question 1 right in the exam, I got to but then stopped. Will I get any marks for that? Also, I believe I got the domain/range question correct, but I didn't show any working I just stated the domain and range. Will I get ANY marks there?
I should have known how to do Q3, but clearly didn't. Question 4, I'm still confused by, I did draw a sketch and realised it would be at the bottom right. Question 5, I see now, couldn't think how to do so in exam.
Thanks Carrotsticks.
Yep you are correct, I missed that case =)@Carrot- how the eff do you latex/type that fast? That was amazing. Oh and I think for 4) there is another point (-2,2) considering where AC is parallel to BD
I'm not sure what independent is? The exam, yeah, I went very bad.was that the independent 2 hour exam. My brother also sat it today he said it was alright... how did you go?
I'm not quite sure what the marking for it was like. For the sketch, I sketched something that looked like this:You would get maybe 1 mark for doing that, but it really depends on how many marks were allocated to it overall. If it was worth 3, then you would definitely get 1 mark. If worth 2, maybe if you're lucky. If worth 1, then no.
Different schools mark differently. I know for sure my school would have docked off a mark if I didn't include a sketch of the curve, showing the domain/range. Other schools let you get away with just stating it for more simple questions like that. Domain/Range can get quite complicated later on when doing Inverse Trig, so some working out is needed then. For this, perhaps not.
Q4 can be bottom right, or top right. Sketch it, and you will see.
Yeah the whole back page was trigonometry and I didn't really answer any of it. I also have trouble with proofs for triangles.That's alright, its only year 11, did you have problems with anything else?
There's a long way and a shortcut:Yeah the diagram I drew in the exam was the 1st one, deswa1. I'm wondering, how do you actually FIND that point? Is there a certain way to do it? I'm unsure.