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November 01, 2025, 04:18:55 pm
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Author Topic: Hyperblade01 Question Thread  (Read 6873 times)  Share 

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TrueTears

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Re: Hyperblade01 Question Thread
« Reply #30 on: September 19, 2009, 03:10:21 pm »
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Quote from: hyperblade01 on September 19, 2009, 03:06:07 pm
Thanks, another question:

a) was worth 3 marks, where do they get distributed?

1 for answer
1 for correct initial equation
1 for working

??

The suggested answers went kinda overboard imo but my answer seems a bit short for 3 marks...
Happens a lot with these dynamics questions especially if you do physics. I think the answers are just being pedantic and trying to show every step, including + and - directions with i and j notations. From my perspective your working would gain you full marks.
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hyperblade01

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Re: Hyperblade01 Question Thread
« Reply #31 on: September 19, 2009, 03:12:43 pm »
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Thanks for the clarification guys :)
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hyperblade01

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Re: Hyperblade01 Question Thread
« Reply #32 on: September 20, 2009, 05:09:06 pm »
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If i write rather than , is there any penalty?

Following the formula sheet, using those calculus rules gives my notation so I'm guessing its alright.
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Damo17

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Re: Hyperblade01 Question Thread
« Reply #33 on: September 20, 2009, 05:11:17 pm »
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Quote from: hyperblade01 on September 20, 2009, 05:09:06 pm
If i write rather than , is there any penalty?

Following the formula sheet, using those calculus rules gives my notation so I'm guessing its alright.

It is alright. They usually use instead of now.
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humph

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Re: Hyperblade01 Question Thread
« Reply #34 on: September 20, 2009, 09:30:46 pm »
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Quote from: hyperblade01 on July 22, 2009, 05:26:40 pm
Looks alright at first, but then i screwed up..

If anyone is able to show full working that would be great :) (might be better to do by hand and upload)




This probably wouldn't be that hard to do usin contour integration (basically converting this to a complex integral - 2nd year uni maths). But it would be a bitch to do otherwise. The integration questions are rarely that hard even on UMEP Maths exams, let alone spec exams...

Quote from: Damo17 on September 20, 2009, 05:11:17 pm
Quote from: hyperblade01 on September 20, 2009, 05:09:06 pm
If i write rather than , is there any penalty?

Following the formula sheet, using those calculus rules gives my notation so I'm guessing its alright.

It is alright. They usually use instead of now.
? They've always used , haven't they?
I wrote on the exam, back in the day. Doesn't make any difference.
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hyperblade01

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Re: Hyperblade01 Question Thread
« Reply #35 on: September 21, 2009, 09:47:08 pm »
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Is the initial differential equation gonna have -k or k?
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TrueTears

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Re: Hyperblade01 Question Thread
« Reply #36 on: September 21, 2009, 10:02:36 pm »
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Could be either.

1. -k where k is a positive constant.

2. k where k is a negative constant.

Specification is essential.
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hyperblade01

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Re: Hyperblade01 Question Thread
« Reply #37 on: September 21, 2009, 10:27:12 pm »
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Positive constant :p - so it'll be -k


Ny final answer is still correct, but in exact form is the other way round to the suggested answer - they have something like 10ln 1/2 over ln 4/3 whilst i have 10ln 2 over ln 3/4
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TrueTears

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Re: Hyperblade01 Question Thread
« Reply #38 on: September 21, 2009, 10:32:33 pm »
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Ain't those 2 answers the same? [Even in exact form]

« Last Edit: September 21, 2009, 10:40:24 pm by TrueTears »
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hyperblade01

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Re: Hyperblade01 Question Thread
« Reply #39 on: September 21, 2009, 11:19:58 pm »
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Well if you play around with it like that i can get their answer and they can get my answer but the thing is, would they accept both forms?


Being a bit pedantic :p
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TrueTears

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Re: Hyperblade01 Question Thread
« Reply #40 on: September 21, 2009, 11:21:55 pm »
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Yeah they're both identical, both forms would be accepted.
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