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March 29, 2024, 09:28:46 am

Author Topic: 3U Maths Question Thread  (Read 1230408 times)  Share 

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massive

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Re: 3U Maths Question Thread
« Reply #540 on: August 10, 2016, 01:03:13 am »
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I don't know how to do this either :/

jakesilove

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Re: 3U Maths Question Thread
« Reply #541 on: August 10, 2016, 01:28:23 am »
+1
guys how do you do part ii?

I would genuinely just do it by guess and check. Here's my method for the whole thing! Sorry about the lack of maths, but it's late.



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massive

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Re: 3U Maths Question Thread
« Reply #542 on: August 10, 2016, 01:40:26 am »
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Thanks Jake!

Guys I just have one more binomial question (hopefully)
I don't know how to do both parts
Thanks!

jakesilove

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Re: 3U Maths Question Thread
« Reply #543 on: August 10, 2016, 01:52:24 am »
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I don't know how to do this either :/

It's pretty goddamned late, so I really hope this is correct.


Jake
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jakesilove

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Re: 3U Maths Question Thread
« Reply #544 on: August 10, 2016, 01:55:44 am »
+1
Thanks Jake!

Guys I just have one more binomial question (hopefully)
I don't know how to do both parts
Thanks!

I'm not going to be able to have a crack at this one tonight, but by the looks of it you need to expand the binomial, set it equal to it's un-expanded form, then differentiate it. You'll either have to differentiate again, or just set x=1, I'm not entirely sure by the looks of it. Give it a go, show us your working out, and we can have another go in to morning!
ATAR: 99.80

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RuiAce

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Re: 3U Maths Question Thread
« Reply #545 on: August 10, 2016, 08:21:57 am »
+1
Thanks Jake!

Guys I just have one more binomial question (hopefully)
I don't know how to do both parts
Thanks!
From memory this was in the 2004 HSC. Like previously said, please consult the answers before you post these up.

THSC
I'm not going to be able to have a crack at this one tonight, but by the looks of it you need to expand the binomial, set it equal to it's un-expanded form, then differentiate it. You'll either have to differentiate again, or just set x=1, I'm not entirely sure by the looks of it. Give it a go, show us your working out, and we can have another go in to morning!
First part's differentiating. Second part is integrating though
I'm not going to be able to have a crack at this one tonight, but by the looks of it you need to expand the binomial, set it equal to it's un-expanded form, then differentiate it. You'll either have to differentiate again, or just set x=1, I'm not entirely sure by the looks of it. Give it a go, show us your working out, and we can have another go in to morning!
Yeah it's correct.
« Last Edit: August 10, 2016, 08:58:43 am by RuiAce »

jamgoesbam

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Re: 3U Maths Question Thread
« Reply #546 on: August 10, 2016, 05:04:24 pm »
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Hi!
Could someone please explain how to work out this multiple choice question? Thanks! (Answer: C)

RuiAce

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Re: 3U Maths Question Thread
« Reply #547 on: August 10, 2016, 05:16:04 pm »
+2
Hi!
Could someone please explain how to work out this multiple choice question? Thanks! (Answer: C)



« Last Edit: August 10, 2016, 06:31:15 pm by RuiAce »

massive

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Re: 3U Maths Question Thread
« Reply #548 on: August 10, 2016, 05:57:23 pm »
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This question looks simple but its pretty deadly, no one in my class got it, nor my teacher; help please!

RuiAce

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Re: 3U Maths Question Thread
« Reply #549 on: August 10, 2016, 06:26:05 pm »
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This question looks simple but its pretty deadly, no one in my class got it, nor my teacher; help please!
I only know how to do this one cause I've seen it before,


levendibigd

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Re: 3U Maths Question Thread
« Reply #550 on: August 10, 2016, 06:44:38 pm »
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Hey! Could I please have an explanation for solution for (a)(ii). I'm a bit confused as to why k=-6

massive

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Re: 3U Maths Question Thread
« Reply #551 on: August 10, 2016, 06:46:12 pm »
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guys what is this question even?

RuiAce

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Re: 3U Maths Question Thread
« Reply #552 on: August 10, 2016, 06:55:16 pm »
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Hey! Could I please have an explanation for solution for (a)(ii). I'm a bit confused as to why k=-6




« Last Edit: August 10, 2016, 07:00:49 pm by jakesilove »

RuiAce

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Re: 3U Maths Question Thread
« Reply #553 on: August 10, 2016, 07:09:49 pm »
+1

conic curve

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Re: 3U Maths Question Thread
« Reply #554 on: August 10, 2016, 07:52:25 pm »
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The range for this is -3pi≤y≤0

The range for this is just the normal 0≤y≤pi

The range for this is -3pi/2<y<3pi/2
im not really sure how you get point of inflexion (sorry) but im pretty sure its still at the origin for this.

could you please explain how/why they are the range(s)?