Maths Methods (Exam 2): Discussion, Questions & Potential Solutions

[Freddie Hg]

Pretty sure the other answer was a<3-sqrt(14) or something

yeah

[Lear]

Anyone manage to figure out question 20 of MC?

[DoingExamsATM]

Anyone manage to figure out question 20 of MC?

What was the question again? I initially struggled with multiple choice 17-20, but managed to struggle through it and get answers I'm very confident in

[DinWell]

Pretty sure the other answer was a<3-sqrt(14) or something.

I did the same but I just realized it's wrong as a>0

Didn't it say that a was any real number? I thought it a>1 since that's the condition if we want just 1 turning point.

[Nason]

Didn't it say that a was any real number? I thought it a>1 since that's the condition if we want just 1 turning point.

Ooooh maybe, but I think having a<0 would reflect the entire graph causing there to be more than one intersection right? not sure

[integrationbyrecognition]

How are people saying yesterdays was harder? Did we get different exams? With the exception of the last question yesterday, today’s one was ten times harder.

I reckon today's exam 2 was harder than any of the previous years methods exam 2's

[integrationbyrecognition]

For the question where we had to find the gradient of the second slope or whatever i set my calculator to degrees and got ~0.067
but i then used this value in the next question and got P as (~53.9, ~4.9). Am I likely to get any consequential marks here?

[G-Fr3sh]

1.91m but other people got 1.90 so I'm not sure

Edit: 1.90835472m

I got 1.51

[Lear]

Didn't it say that a was any real number? I thought it a>1 since that's the condition if we want just 1 turning point.

yeah a>1 was a condition as the question asked 'if there is only one turning point, find a such that....'
So a was implicitly more than 1.

[DinWell]

Ooooh maybe, but I think having a<0 would reflect the entire graph causing there to be more than one intersection right? not sure

Yeah a cant be negative if there's one intersection but also it can't be between 0 and 1.

[Nason]

Yeah a cant be negative if there's one intersection but also it can't be between 0 and 1.

Yeah that's one mark lost for me. Should have known there wouldn't be two ranges given the previous questions. Surprised I got the answer though as no one else in my cohort did

[AlphaZero]

Anyone manage to figure out question 20 of MC?

I'm working on solutions right now. I just finished worked solutions for Section A

[Chloe.lee2001]

When will the full solutions be up? Should’ve written down what I got for the mc but ran out of time even to finish the exam 

[Freddie Hg]

Yeah a cant be negative if there's one intersection but also it can't be between 0 and 1.

]
blasts!!!

[AlphaZero]

When will the full solutions be up? Should’ve written down what I got for the mc but ran out of time even to finish the exam 

I'm working on them as fast as I can! I should get them up in the next 2 hours