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Author Topic: Mathematical Methods CAS Exam 2 Discussion - How was it??  (Read 53416 times)  Share 

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ttn

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Re: Mathematical Methods CAS Exam 2 Discussion - How was it??
« Reply #105 on: November 09, 2011, 05:14:25 pm »
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Damn, looks like I got the mean wrong, got e^2 + 4/3 = 8.722

How did yous do it?

oh fk.... I antidiffed the second one from infinity to 0. fk sakes
« Last Edit: November 09, 2011, 05:16:37 pm by ttn »
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tictac

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Re: Mathematical Methods CAS Exam 2 Discussion - How was it??
« Reply #106 on: November 09, 2011, 05:15:05 pm »
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Quote from: mattshen on November 09, 2011, 05:08:18 pm
Quote from: luken93 on November 09, 2011, 05:06:28 pm
Quote from: ClimbTooHigh on November 09, 2011, 04:51:11 pm
Was E(Y) = 4.333?
not according to iTute, but that's what I got :S

I'm quite sure it was 4.333 as well =="
i got that as well!
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mattshen

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Re: Mathematical Methods CAS Exam 2 Discussion - How was it??
« Reply #107 on: November 09, 2011, 05:15:51 pm »
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how did you guys work out what k was for that cubic function...i remember getting c=4/3 but i think i got the value of k wrong :S
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chhanabhai

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Re: Mathematical Methods CAS Exam 2 Discussion - How was it??
« Reply #108 on: November 09, 2011, 05:16:16 pm »
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so were is constant of proportionality in methods i think i missed it ...
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Furbob

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Re: Mathematical Methods CAS Exam 2 Discussion - How was it??
« Reply #109 on: November 09, 2011, 05:16:33 pm »
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Quote from: tictac on November 09, 2011, 05:15:05 pm
Quote from: mattshen on November 09, 2011, 05:08:18 pm
Quote from: luken93 on November 09, 2011, 05:06:28 pm
Quote from: ClimbTooHigh on November 09, 2011, 04:51:11 pm
Was E(Y) = 4.333?
not according to iTute, but that's what I got :S

I'm quite sure it was 4.333 as well =="
i got that as well!

me 3 (even with the 333 with the 3 dec places for + punniness)
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Inside Out

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Re: Mathematical Methods CAS Exam 2 Discussion - How was it??
« Reply #110 on: November 09, 2011, 05:17:43 pm »
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How the heel did people do the 2nd last one i jst subbed in x=1 for T but then didnt know what to do next
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Hamdog17

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Re: Mathematical Methods CAS Exam 2 Discussion - How was it??
« Reply #111 on: November 09, 2011, 05:21:08 pm »
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Quote from: mattshen on November 09, 2011, 05:15:51 pm
how did you guys work out what k was for that cubic function...i remember getting c=4/3 but i think i got the value of k wrong :S

Yeah I got c=4/3, I wasn't too sure about k either I think I got -10/3 (or something- I'll check my CAS history)
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Furbob

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Re: Mathematical Methods CAS Exam 2 Discussion - How was it??
« Reply #112 on: November 09, 2011, 05:22:05 pm »
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dT/dx = 0

you subbed in x = 1, then figure out the value of k which was 1/4? (was it?)
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ttn

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Re: Mathematical Methods CAS Exam 2 Discussion - How was it??
« Reply #113 on: November 09, 2011, 05:22:34 pm »
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Quote from: Hamdog17 on November 09, 2011, 05:21:08 pm
Quote from: mattshen on November 09, 2011, 05:15:51 pm
how did you guys work out what k was for that cubic function...i remember getting c=4/3 but i think i got the value of k wrong :S

Yeah I got c=4/3, I wasn't too sure about k either I think I got -10/3 (or something- I'll check my CAS history)

lmao that's what I got also but then noticed I was using the point (1,1) which belonged to the function before it.
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Anon123

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Re: Mathematical Methods CAS Exam 2 Discussion - How was it??
« Reply #114 on: November 09, 2011, 05:23:25 pm »
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Quote from: ttn on November 09, 2011, 05:22:34 pm
Quote from: Hamdog17 on November 09, 2011, 05:21:08 pm
Quote from: mattshen on November 09, 2011, 05:15:51 pm
how did you guys work out what k was for that cubic function...i remember getting c=4/3 but i think i got the value of k wrong :S

Yeah I got c=4/3, I wasn't too sure about k either I think I got -10/3 (or something- I'll check my CAS history)

lmao that's what I got also but then noticed I was using the point (1,1) which belonged to the function before it.

I got the same!

:D:D:D:D
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Re: Silly things you did during the exam..
Quote from: Anon123 on November 03, 2011, 05:15:17 pm
I accidentally wrote a really shit context essay, oh wai-

English (33>31)
called it

BubbleWrapMan

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Re: Mathematical Methods CAS Exam 2 Discussion - How was it??
« Reply #115 on: November 09, 2011, 05:23:36 pm »
+1
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Tim Koussas -- Co-author of ExamPro Mathematical Methods and Specialist Mathematics Study Guides, editor for the Further Mathematics Study Guide.

Current PhD student at La Trobe University.

Anon123

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Re: Mathematical Methods CAS Exam 2 Discussion - How was it??
« Reply #116 on: November 09, 2011, 05:24:52 pm »
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Quote from: ClimbTooHigh on November 09, 2011, 05:23:36 pm


I tried this and my CAS wouldn't do it...I think I ended up with 1.4xx or 1.6xxx or something, was quite sure I got it wrong

edit: I assume you mean 0 to 4 though?
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Re: Silly things you did during the exam..
Quote from: Anon123 on November 03, 2011, 05:15:17 pm
I accidentally wrote a really shit context essay, oh wai-

English (33>31)
called it

Panicmode

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Re: Mathematical Methods CAS Exam 2 Discussion - How was it??
« Reply #117 on: November 09, 2011, 05:26:11 pm »
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Quote from: ClimbTooHigh on November 09, 2011, 05:23:36 pm


Please dear god be right. This is what I did.
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mattshen

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Re: Mathematical Methods CAS Exam 2 Discussion - How was it??
« Reply #118 on: November 09, 2011, 05:26:34 pm »
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Quote from: Hamdog17 on November 09, 2011, 05:21:08 pm
Quote from: mattshen on November 09, 2011, 05:15:51 pm
how did you guys work out what k was for that cubic function...i remember getting c=4/3 but i think i got the value of k wrong :S

Yeah I got c=4/3, I wasn't too sure about k either I think I got -10/3 (or something- I'll check my CAS history)

mmm yea i got -10/3 but im quite sure its incorrect :S
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BubbleWrapMan

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Re: Mathematical Methods CAS Exam 2 Discussion - How was it??
« Reply #119 on: November 09, 2011, 05:26:52 pm »
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Quote from: Anon123 on November 09, 2011, 05:24:52 pm
Quote from: ClimbTooHigh on November 09, 2011, 05:23:36 pm

I tried this and my CAS wouldn't do it...I think I ended up with 1.4xx or 1.6xxx or something, was quite sure I got it wrong

edit: I assume you mean 0 to 4 though?
Uh yes. =P Sorry.
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Tim Koussas -- Co-author of ExamPro Mathematical Methods and Specialist Mathematics Study Guides, editor for the Further Mathematics Study Guide.

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