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VCE Stuff => VCE Mathematics => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Specialist Mathematics => Topic started by: Alan Pho on October 31, 2013, 08:16:01 pm

Title: "Show that..." and "Prove that..." type questions
Post by: Alan Pho on October 31, 2013, 08:16:01 pm: Hi guys

I tried googling around but i couldn't find any answers..

Is it totally sufficient to write 'Q.E.D.' at the end of showing/proving questions in spesh? (As well as for methods?)

Thanks in advance
Title: Re: "Show that..." and "Prove that..." type questions
Post by: Stevensmay on October 31, 2013, 08:17:45 pm: Is there a reason you feel that you need to write QED? I'm not sure what it brings to the answer, and in some cases you might be able to prove it further making you wrong.

I doubt you would lose marks for it, unless it was wrongly used.
QED is not needed by VCAA.
Title: Re: "Show that..." and "Prove that..." type questions
Post by: Alwin on October 31, 2013, 08:21:03 pm: Quote from: Alan Pho on October 31, 2013, 08:16:01 pm
Hi guys

I tried googling around but i couldn't find any answers..

Is it totally sufficient to write 'Q.E.D.' at the end of showing/proving questions in spesh? (As well as for methods?)

Thanks in advance

Actually its optional. Most people just end with LHS=RHS. *move on to next question*
Personally tho, I just right "as required" in methods and spesh

Or, you could do:
(http://www.qedcat.com/citypage/catsne.JPG)

:))
Title: Re: "Show that..." and "Prove that..." type questions
Post by: BigAl on October 31, 2013, 08:23:07 pm: As requested, as required, as shown
Title: Re: "Show that..." and "Prove that..." type questions
Post by: Alan Pho on October 31, 2013, 08:35:02 pm: Quote from: Alwin on October 31, 2013, 08:21:03 pm
Actually its optional. Most people just end with LHS=RHS. *move on to next question*
Personally tho, I just right "as required" in methods and spesh

Or, you could do:
(http://www.qedcat.com/citypage/catsne.JPG)

:))

Heheh thanks so much for the advice guys...
i really like that cat picture LOL
Title: Re: "Show that..." and "Prove that..." type questions
Post by: nspire on October 31, 2013, 08:59:25 pm: Quote from: Alwin on October 31, 2013, 08:21:03 pm
Actually its optional. Most people just end with LHS=RHS. *move on to next question*
Personally tho, I just right "as required" in methods and spesh

Or, you could do:
(http://www.qedcat.com/citypage/catsne.JPG)

:))

Alwin, would the name of the guy in that photo happen to be Burkard??
Title: Re: "Show that..." and "Prove that..." type questions
Post by: b^3 on October 31, 2013, 09:04:47 pm: Quote from: Alwin on October 31, 2013, 08:21:03 pm
Actually its optional. Most people just end with LHS=RHS. *move on to next question*
Personally tho, I just right "as required" in methods and spesh

Or, you could do:
(http://www.qedcat.com/citypage/catsne.JPG)

:))
QEDCAT!
http://www.qedcat.com/ - good procrastination, especially the maths movie clips collection - http://www.qedcat.com/movieclips/index.html
Quote from: nspire on October 31, 2013, 08:59:25 pm
Alwin, would the name of the guy in that photo happen to be Burkard??
And yeah that's Burkard Polster.
....as for the actual question.
Quote from: Alan Pho on October 31, 2013, 08:16:01 pm
Hi guys

I tried googling around but i couldn't find any answers..

Is it totally sufficient to write 'Q.E.D.' at the end of showing/proving questions in spesh? (As well as for methods?)

Thanks in advance
You don't really need anything there, I normally would just have a $\therefore$ , "therefore" at the start of the last line to show that I've come to a conclusion really. Most of what you're 'proving' in VCE maths isn't that special really, most of it really is a "show that" and not an actual proof, although there are a small amount of proofs in spesh with vectors and such, but that's about it really.
Title: Re: "Show that..." and "Prove that..." type questions
Post by: Alwin on October 31, 2013, 09:09:14 pm: Quote from: nspire on October 31, 2013, 08:59:25 pm
Alwin, would the name of the guy in that photo happen to be Burkard??

I googled "Burkard QED CAT" to find that pic hehe. He's my MUEP lecturer :D You know him nspire?

Look at b^3's post for more :))