BoS Maths Trials 2017 (1 Viewer)

[aycaramba]

tf I couldn't even do the 1st integration question in 4u...guess i'm fked for the hsc

 

[pikachu975]

tf I couldn't even do the 1st integration question in 4u...guess i'm fked for the hsc

This guy behind me (calamebe) said he only missed 11 marks the whole exam and he couldn't do it either, and so couldn't many others (including me) so all good.

 

[leehuan]

I feel like that integral has been on the marathon somewhere before...






...feel like I might've messed up though

 

[apinix]

I feel like that integral has been on the marathon somewhere before...






...feel like I might've messed up though

For me, I divided top and bottom by cos^2 and it just becomes integral with secx and tanx

 

[fluffchuck]

For me, I divided top and bottom by cos^2 and it just becomes integral with secx and tanx

I used t-formula

 

[SaltSolutionPromo]

If you use t-results while letting t=tanx, it's a trivial question. Can't believe I missed it in the exam ...

 

[SaltSolutionPromo]

Last question was pretty well-written in my opinion. It felt like I was really doing real analysis.

 

[Trebla]

Outside of Q16, what questions did you find the most challenging?

 

[fluffchuck]

Outside of Q16, what questions did you find the most challenging?

All of multiple choice

 

[Paradoxica]

legit only one person got the spiky volumes question correct

I feel attacked

 

[pikachu975]

Outside of Q16, what questions did you find the most challenging?

Multiple choice, Q11, Q12, Q13, Q14, Q15

legit only one person got the spiky volumes question correct

I feel attacked

calamebe confirmed

 

[Paradoxica]

calamebe confirmed

can confirm that it isn't

 

[pikachu975]

can confirm that it isn't

RIP

I just skipped it because I didn't know how to find the area of the cross section and I didn't think of integrating for area because it was 2 marks haha

 

[SaltSolutionPromo]

can confirm that it isn't

I got the same answer as Calamebe so I must've gotten it wrong too

 

[Paradoxica]

aye lmao apparently people think



rip there goes ur marks

also

a lot of people forgot that √k = 1-√h

their area function was (1-√h)² instead of (1-√h)⁴

there goes another mark

bless u janzen choi for being the one person who got my spiky volume correct <3

another kid almost got the answer correct but they forgot to double the result bc they were only finding the upper half volume...

rip in pieces

also a lot of u stoners thought the curved edges were like a square minus a circle????

can u even graphs plz

 

[Paradoxica]

that's not even close

 

[apinix]

Got the solution when I got home

 

[legend12345]

when will solutions be up??

 

[Trebla]

Before the respective HSC exam

Though feel free to request hints/short solutions to any particular question you want an answer for now

 

[SaltSolutionPromo]

Before the respective HSC exam

Though feel free to request hints/short solutions to any particular question you want an answer for now

For the Q11 (c)(i) vectors question, after using the triangular inequality, how do you come to the inequality you're required to prove? I can't seem to work out how to algebra this.