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VCE Stuff => VCE Mathematics => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Specialist Mathematics => Topic started by: Chocolate01 on October 26, 2010, 07:47:57 pm

Title: 'An' Antiderivative?
Post by: Chocolate01 on October 26, 2010, 07:47:57 pm
My teacher said regardless of the fact if the question asks for 'an' antiderivative or the antiderivative, the  '+c' must be stated, this is becoz in the 2006 paper exam1,Q8, it asks for 'an antiderivative' and there is a '+c'in the assessment report. So do we really need it even when it says 'an"???
Title: Re: 'An' Antiderivative?
Post by: sajib_mostofa on October 26, 2010, 07:49:48 pm
I'd put it just in case to be on the safe side. They can't mark you down if you put one.
Title: Re: 'An' Antiderivative?
Post by: m@tty on October 26, 2010, 07:54:00 pm
My teacher said regardless of the fact if the question asks for 'an' antiderivative or the antiderivative, the  '+c' must be stated, this is becoz in the 2006 paper exam1,Q8, it asks for 'an antiderivative' and there is a '+c'in the assessment report. So do we really need it even when it says 'an"???

Well, they leave it off in quite a few others.

If you write out the proper anti-derivative, then finally state "Therefore an anti-derivative of ... is ...." then you should be safe.

Because the "+C" denotes a family of functions, and "an" is singular => So really with the "+C" it is wrong...
Title: Re: 'An' Antiderivative?
Post by: samuch on October 26, 2010, 07:57:04 pm
yeah dont include the +c, they accepted the +c on some papers because it can be considered 'an' antiderivative
Title: Re: 'An' Antiderivative?
Post by: Blakhitman on October 26, 2010, 08:13:16 pm
My teacher said regardless of the fact if the question asks for 'an' antiderivative or the antiderivative, the  '+c' must be stated, this is becoz in the 2006 paper exam1,Q8, it asks for 'an antiderivative' and there is a '+c'in the assessment report. So do we really need it even when it says 'an"???

Well, they leave it off in quite a few others.

If you write out the proper anti-derivative, then finally state "Therefore an anti-derivative of ... is ...." then you should be safe.

Because the "+C" denotes a family of functions, and "an" is singular => So really with the "+C" it is wrong...

After I read that idea off the.watchman I've been doing it all the time :D
Title: Re: 'An' Antiderivative?
Post by: m@tty on October 26, 2010, 08:15:46 pm
Yeah, it's mathematically incorrect to simply leave off the "+C".

If there is an "an anti-derivative" question in the exam I'm tempted to put a constant like rather than a boring zero.
Title: Re: 'An' Antiderivative?
Post by: Blakhitman on October 26, 2010, 08:44:22 pm
Yeah, it's mathematically incorrect to simply leave off the "+C".

If there is an "an anti-derivative" question in the exam I'm tempted to put a constant like rather than a boring zero.

lol just for lols put like a massive number as a constant, add in sin cos sec, see if they mark you correct haha
Title: Re: 'An' Antiderivative?
Post by: m@tty on October 26, 2010, 08:46:46 pm
Maybe I'll put a series: or something similar... :p
Title: Re: 'An' Antiderivative?
Post by: Blakhitman on October 26, 2010, 09:03:41 pm
You do it and see if they give you the mark.

You'll be labeled a hero for taking the risk :p
Title: Re: 'An' Antiderivative?
Post by: m@tty on October 26, 2010, 09:06:42 pm
I'll let you be the hero.
Title: Re: 'An' Antiderivative?
Post by: roberto on October 26, 2010, 09:08:13 pm
My teacher said regardless of the fact if the question asks for 'an' antiderivative or the antiderivative, the  '+c' must be stated, this is becoz in the 2006 paper exam1,Q8, it asks for 'an antiderivative' and there is a '+c'in the assessment report. So do we really need it even when it says 'an"???

u wont get penalised with +c if it says "an". though technically u don't need it. 
Title: Re: 'An' Antiderivative?
Post by: Blakhitman on October 26, 2010, 09:13:30 pm
I'll let you be the hero.

I guess "we must stand fast a little, even at the risk of being heroes".

Bolt demonstrates that although one may not like the idea of being a hero, it is essential that one remains true to themselves-especially in matters related to mathematics-even if it may ultimately result in them being labeled as heroes.
Title: Re: 'An' Antiderivative?
Post by: 98.40_for_sure on October 26, 2010, 09:24:56 pm
I'll let you be the hero.

I guess "we must stand fast a little, even at the risk of being heroes".

Bolt demonstrates that although one may not like the idea of being a hero, it is essential that one remains true to themselves-especially in matters related to mathematics-even if it may ultimately result in them being labeled as heroes.

This is not the stuff of which heroes are made
Title: Re: 'An' Antiderivative?
Post by: /0 on October 26, 2010, 09:26:41 pm
Maybe I'll put a series: or something similar... :p

lol you should try to find a series where it is very hard to prove it converges

e.g.
converges but it takes time to prove :p
Title: Re: 'An' Antiderivative?
Post by: Blakhitman on October 26, 2010, 09:30:03 pm
I'll let you be the hero.

I guess "we must stand fast a little, even at the risk of being heroes".

Bolt demonstrates that although one may not like the idea of being a hero, it is essential that one remains true to themselves-especially in matters related to mathematics-even if it may ultimately result in them being labeled as heroes.

This is not the stuff of which heroes are made

tutut incorrect quote!
Title: Re: 'An' Antiderivative?
Post by: 98.40_for_sure on October 26, 2010, 09:39:47 pm
I'll let you be the hero.

I guess "we must stand fast a little, even at the risk of being heroes".

Bolt demonstrates that although one may not like the idea of being a hero, it is essential that one remains true to themselves-especially in matters related to mathematics-even if it may ultimately result in them being labeled as heroes.

This is not the stuff of which heroes are made

tutut incorrect quote!

I DONT KNOW ANY QUOTES, SHIT.
Title: Re: 'An' Antiderivative?
Post by: Blakhitman on October 26, 2010, 09:58:27 pm
lol we all know you know AMFAS back to front and you're gonna own the exam...
Title: Re: 'An' Antiderivative?
Post by: 98.40_for_sure on October 26, 2010, 10:00:08 pm
lol we all know you know AMFAS back to front and you're gonna own the exam...

I am a common man. However, a common man without a common sense is but a dead man.
Title: Re: 'An' Antiderivative?
Post by: jasonn93 on October 27, 2010, 08:01:27 pm
Wouldn't it be safest to write down the +c after you integrate it, and then write down a line saying 'take c=0' ? Covers all the bases :)
Title: Re: 'An' Antiderivative?
Post by: m@tty on October 27, 2010, 08:20:22 pm
Yep, that's what you should do.
Title: Re: 'An' Antiderivative?
Post by: chansthename on October 28, 2010, 02:26:03 pm
Not a bad idea. personally I think having  +c in your asnwer deserves a penalisation.
Title: Re: 'An' Antiderivative?
Post by: m@tty on October 28, 2010, 02:27:52 pm
Not a bad idea. personally I think having  +c in your asnwer deserves a penalisation.

Yeah, it's clearly wrong.

And they do have some questions which are "an" antiderivative, while others are simply "the" antiderivative; hence I'd assume they do expect different answers..
Title: Re: 'An' Antiderivative?
Post by: jasoN- on October 28, 2010, 02:29:20 pm
happened in methods '09 normal exam, had no idea about 'an' antiderivative, don't know if we got penalised or not