General Thoughts: Mathematics Extension 1 (3 Viewers)

[GOsie]

holy mother fking shit i forgot to do Q11 e 3 fking easy marks gone i hate myself...

I have a twin

 

[faisalabdul16]

What was the answer to 10?

Also how did everyone prove that the line was a tangent to the circle?

 

[mreditor16]

don't be afraid to humblebrag - do you think you got 100%?

I think so, but you never know :/ quietly confident

 

[QZP]

What was the answer to 10?

Also how did everyone prove that the line was a tangent to the circle?

C (mreditor has his answers on a thread)

Alternate segment thereom (using previous part and the fact that OPA isosceles)

 

[SamuelC23]

Overall I thought it was quite an easy exam. Questions I struggled with was finding 'D' in the projectile motion question (although I think I will get 2/3), the circle locus of Q(which I also think I will get 2/3 as I nearlly solved it using QS=OS), the 2nd part of the circle geometry question and of course the last question (what the hell was that?). I think I'll get about 90%.

 

[cashmoe]

I have a twin

i literally have no idea how too. I never miss out on a question. I managed to do all the other questions too.

 

[mreditor16]

my thoughts and answers for MC and Q11 are here. --> http://community.boredofstudies.org/1125/mathematics-extension-1/330064/hmmm.html
will be updating with Q12, Q13 and Q14 soon...

 

[IR]

Freaking last question. I damn the last question. So easy to do yet so difficult to understand

 

[Trebla]

It looked like one of the easier papers. Q12e) was quite a good one because you have to understand the mechanism of Newton's method rather than blindly apply the formula.

 

[mreditor16]

Q12 is done --> http://community.boredofstudies.org/1125/mathematics-extension-1/330064/hmmm.html

 

[mreditor16]

Did anyone look at the BoS trial paper for 2013?

you're referring to Q14 a) ??

 

[mreditor16]

Q13 is now done - http://community.boredofstudies.org/1125/mathematics-extension-1/330064/hmmm.html

 

[braintic]

Solutions up to 13 c. Rest following.

Pity the people who slogged through the algebra of that question instead of seeing the beauty of the geometry.

View attachment Mathematics Extension 1 2014 Solutions.pdf

 

[IR]

Solutions up to 13 c. Rest following.

Pity the people who slogged through the algebra of that question instead of seeing the beauty of the geometry.

View attachment 31210

I saw that. But didn't use that. Exam nerves got me algebraiiiing.

 

[esaitchkay]

Quite a nice test. For 13ciii), I let (0, 2a) be S' and found gradient QS', which was -1/t
QS' x OQ = -1 therefore OS' diameter (subtending 90 degrees at circumference) on circle x^2 + (y-a)^2 = a^2
Does that sound legit?

 

[Prawnchip]

That was so fked

Can anyone estimate the raw mark for E3? I'm praying for a middle - high E3

 

[SquareZ]

I think I got 69/70 after cross checking with some mates and mreditor's answers. GOD DAMN I put B for the last multiple choice! So close!

 

[nikitasuitsrevenge]

all the effort gone the damn toilet. BOSTES, can't wait to never even hear that again. Seriously, i thought was the 4 unit test was way better, even not counting scaling, just percentage wise. bye bye e4, hope e3 will accept me, probs not.

 

[aDimitri]

Solutions up to 13 c. Rest following.

Pity the people who slogged through the algebra of that question instead of seeing the beauty of the geometry.

View attachment 31210

you made a silly mistake in 12c

 

[mreditor16]

okay all the answers are up --> http://community.boredofstudies.org/1125/mathematics-extension-1/330064/hmmm.html