VCE Maths Methods Exam 1 Discussion and Solutions

[JOHNSMITH II]

What did people get for C?? I ATTEMPTED it and somehow ended up with (1/3 , 1/6). NO clue how or what the real answer is.

I got 11/27 and 16/27 for x and y respectively

How did people answer the trig questions regarding the values for tan?

Yeah, I messed up here...now, Im fairly certain it was supposed to be "1, plus minus root 3"

Yeah I definitely struggled with the scale. For some reason I kept on getting the gradient of line BC to be 1 at x=1 on the graph of y=f(x), which seemed wrong...

Same, the derivative shouldn't be defined at this point, but no matter how I looked at it, I kept getting x is 1 for a gradient of -1

[Lethal Sauce]

How did people answer the trig questions regarding the values for tan?

This is what I ended up getting:

tan⁡(x)=1,±√3

Therefore, x=π/4, π/3, 2π/3  for x[0,π]

I think this is what I got...

[princessofpersia]

Guys do we get a mark for writing down steps, if you couldn't solve the question.
 For the last question, I got stuck on the simple algebraic equation of equating the gradient to 1  , and couldnt go further, so I wrote what i would do with my answer (if I got one) from there.

[Lethal Sauce]

Well, I think I just realised my mistake for the last question.

I accidentally wrote the mx+c equation wrong...

[cookiedream]

Guys do we get a mark for writing down steps, if you couldn't solve the question.
 For the last question, I got stuck on the simple algebraic equation of equating the gradient to 1  , and couldnt go further, so I wrote what i would do with my answer (if I got one) from there.

Yes you do, those count as methods marks

[Joseph41]

A COPY OF THE EXAM.

[princessofpersia]

Yes you do, those count as methods marks

Yayyyyy that brings some hope in me.
Thank youu

[Ahmad_A_1999]

I got 11/27 and 16/27 for x and y respectively

I got that as well for C, but now I'm worried because I ended up equating the gradient function to negative one, even though in the question it said the gradient function is defined between (0,1) 

Yes there is a mistake for the last question, as there does not exist a tangent line at the endpoints of a function. Furthermore, part b explicitly stated the gradient function is defined for (0, 1).

A mistake with the actual question?

[Lethal Sauce]

I got that as well for C, but now I'm worried because I ended up equating the gradient function to negative one, even though in the question it said the gradient function is defined between (0,1) 

A mistake with the actual question? I think completely stuffed it up, I equated the gradient function to ‘-1’ in the last part 😭

I am fairly certain those coords for C are correct. I just did the working out again and came to the same answer. If only I did this fully during the exam  . rip 3+ marks.

[AlphaZero]

MATHEMATICAL METHODS EXAM 1 2017 SOLUTIONS

https://www.dropbox.com/s/778ojefpw317f7f/20171108100254680.pdf?dl=0

Feel free to ask me any questions if you have any. I'm quite sure these are correct. If there are any conceptual errors, please let me know.

Thanks!

[plsbegentle]

I got 11/27 and 16/27 for x and y respectively

That's what i got aswell

Man, that trig question just never clicked for me, lost 3 marks already...but everything else was pretty easy

[blehblop]

What do you guys think the cut off for an A+ will be this year ?
Less than last years 34 or higher ?

Thanks
really worried because i wasn't able to get the last question.

[carol1234567890]

Can anyone explain the range of f h(x ) being 2 to infinity

[euanmcguire]

For Question 5, was the probability conditional? In the last question, is it given Jac got it wrong the first time, what is the probability he gets it on the second or third? I didn't do that, but a few people have said so

[uhoh]

MATHEMATICAL METHODS EXAM 1 2017 SOLUTIONS

https://www.dropbox.com/s/778ojefpw317f7f/20171108100254680.pdf?dl=0

Feel free to ask me any questions if you have any. I'm quite sure these are correct. If there are any conceptual errors, please let me know.

Thanks!

Thank you 
Could you explain q6, q7bii and 7c and how you got 2 positive solns from the quadratic to both parts if the last pg?