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Q14 (1 Viewer)

Rafy

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Discuss your answers to Q14 here.
 

Sup3rDry

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Fucking had no clue on that question. I knew we had to use similarity but i couldn't find the shorter length. Spent ~20 minutes trying to figure it out, until i gave up.
 

MiPh

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(r^3)/a or something like that. I always mess up those questions, so that'll be wrong.
 

brianphamm

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Anyone use parabolas to work out the height? And a straight line to work out the width? (for the volumes question)
 

blazraidr

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Re: General Thoughts: Mathematics Ext 2

Was the volume question 14)c) Volume = (2ar^2)/3 ??
 

Raolan

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I looked at the volumes one for a minute before moving on. Wasn't going to waste time on a question I knew I wouldn't get an answer to.
 

qrpw

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Anyone use parabolas to work out the height? And a straight line to work out the width? (for the volumes question)
I did, then i thought it would be much too hard for a 4 mark q. So I just used the circle- but it seems to be wrong, as it's not. Shame you can't put two answers.
 

cartoonmaiz

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Re: General Thoughts: Mathematics Ext 2

Hey seamieg89 what did you get for the volumes question. It's question 14.
 

usmas

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Re: General Thoughts: Mathematics Ext 2

Rushed that question, i think i got (ar^2)/3. Polynomial was the hardest Q, absolutely no clues.
 

Nws m8

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Re: General Thoughts: Mathematics Ext 2

Rushed that question, i think i got (ar^2)/3. Polynomial was the hardest Q, absolutely no clues.
hahha, i did the first two parts :p
 

OMGITzJustin

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aside from volumes, how did people do 14b ii)? partial fractions?
 

GoldyOrNugget

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Re: General Thoughts: Mathematics Ext 2

Was the volume question 14)c) Volume = (2ar^2)/3 ??
That's what I got. I probably messed up somewhere, but judging by the similarity of other answers (assuming one of those is correct), this should get at least 3/4.
 

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