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April 16, 2024, 11:05:21 pm

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Maz

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Re: Mathematics Question Thread
« Reply #60 on: April 03, 2016, 04:59:49 pm »
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Can't see your image. If your integral was something along the lines of this then in NSW it belongs under MX2.



Also, you said differentiate? Did you mean you wanted to put d/dx in front of that integral? (or d/dt inside it?)
yes that is the integral...and d/dx belongs in front of it...sorry...
and ill go put it in MX2 now then  :)
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Johny1234567

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Re: Mathematics Question Thread
« Reply #61 on: April 03, 2016, 08:46:21 pm »
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Hello y'all. How do I solve this question:

Find the point T(a,lna) on y=lnx where the tangent passes through the origin, i.e. find the value of a.

RuiAce

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Re: Mathematics Question Thread
« Reply #62 on: April 03, 2016, 08:56:47 pm »
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Hello y'all. How do I solve this question:

Find the point T(a,lna) on y=lnx where the tangent passes through the origin, i.e. find the value of a.



aqsarana_

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Re: Mathematics Question Thread
« Reply #63 on: April 10, 2016, 05:11:45 pm »
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Hi,
So currently for Maths 2U and for Ext 1 maths, i am using the maths in focus textbook (Margaret Grove) but i want to purchase another textbook as this one is not that great. I was wondering if you could give suggestions as to what textbook is really good. I'm debating between the Fitzpatrick book and Cambridge book. Please help!
Thank you :)

jakesilove

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Re: Mathematics Question Thread
« Reply #64 on: April 10, 2016, 05:30:32 pm »
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Hi,
So currently for Maths 2U and for Ext 1 maths, i am using the maths in focus textbook (Margaret Grove) but i want to purchase another textbook as this one is not that great. I was wondering if you could give suggestions as to what textbook is really good. I'm debating between the Fitzpatrick book and Cambridge book. Please help!
Thank you :)

Hey!

I really think it depends on what you want a textbook for.

I had the Cambridge textbook, which (if I recall correctly) does a fairly good job of explaining concepts etc. It has a good range of past questions, which will challenge and extend any 2U student.

However, most students don't use their textbook to explain concepts. Usually, students who actually USE their textbook are the super keen ones. In that case, they just want a billion past questions to smash through.

I would always recommend doing HSC past questions rather than textbook ones. They give you a better idea of where you're at, what you need to prepare for, and exactly how you'll be assessed. However, if you've gone through all the past papers so many times that you feel like looking at them, or just want some variety, a textbook is a great option.

If you're just looking for questions, I love the Coroneos textbooks. They are simple, to the point. There are a trillion billion questions to answer. The style takes a bit of getting used to (its like they used a type writer), but the range of questions is really great. It'll extend you as well as test your basic knowledge.

But again, it depends on why you want the textbook. I don't know much about Fitzpatrick, but I would generally lean towards Cambridge of the two.

Hope this helps! I'm sure others on here will have different opinions.

Jake
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RuiAce

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Re: Mathematics Question Thread
« Reply #65 on: April 10, 2016, 08:14:37 pm »
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Hi,
So currently for Maths 2U and for Ext 1 maths, i am using the maths in focus textbook (Margaret Grove) but i want to purchase another textbook as this one is not that great. I was wondering if you could give suggestions as to what textbook is really good. I'm debating between the Fitzpatrick book and Cambridge book. Please help!
Thank you :)

Comparison between Fitzpatrick and Cambridge is somewhat hard. This is because the two textbooks are kinda on par with question quality.

However, the Cambridge textbook's prime advantage is that it splits into foundation, development and extension, whereas Fitzpatrick doesn't mix up the topic order. Keep that in mind.

Of course, when it comes exam time, as mentioned always use past papers.

IkeaandOfficeworks

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Re: Mathematics Question Thread
« Reply #66 on: April 14, 2016, 07:34:45 pm »
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Hi guys!, I seem to struggle with this integration question.Can you explain why the answer is 1/6(2x-1)3/2 + 1/2(2x-1)1/2 + C ?. Thank you!
« Last Edit: April 14, 2016, 07:42:47 pm by IkeaandOfficeworks »

RuiAce

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Re: Mathematics Question Thread
« Reply #67 on: April 14, 2016, 08:28:33 pm »
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Hi guys!, I seem to struggle with this integration question.Can you explain why the answer is 1/6(2x-1)3/2 + 1/2(2x-1)1/2 + C ?. Thank you!

EDIT BY JAMON: Hey IkeaandOfficeworks! Glad you got an answer to your question, for any 2U students looking at this, don't stress, this is Extension 1 content!


« Last Edit: April 15, 2016, 11:53:26 pm by jamonwindeyer »

jamesq

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Re: Mathematics Question Thread
« Reply #68 on: April 24, 2016, 02:14:23 am »
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I need help with a rates and finance question.
For the AP: 100 + 97 + 94 + ...
Show that 68 is the minimum number of terms in which Sn is negative.
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RuiAce

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Re: Mathematics Question Thread
« Reply #69 on: April 24, 2016, 08:45:44 am »
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I need help with a rates and finance question.
For the AP: 100 + 97 + 94 + ...
Show that 68 is the minimum number of terms in which Sn is negative.



Phillorsm

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Re: Mathematics Question Thread
« Reply #70 on: May 08, 2016, 05:34:27 pm »
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Hey Guys,
Some help with this question please?
https://goo.gl/3ZYQOC

jakesilove

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Re: Mathematics Question Thread
« Reply #71 on: May 08, 2016, 06:07:16 pm »
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Hey Guys,
Some help with this question please?
https://goo.gl/3ZYQOC

Hey! Below are my answers :) The whole tan(2x) thing was a little bit nuanced, but really it ended up being just about playing around with what you're given, and trying to figure out what they're actually asking you to do. Worst case scenario with questions like this; you can always test it on a calculator, figure out the answer without the whole 'hence' part, and fudge the reasoning.





Jake
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Phillorsm

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Re: Mathematics Question Thread
« Reply #72 on: May 08, 2016, 08:23:12 pm »
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Hey Jake,
Thanks for the help! But i'm a little confused, isn't there another intersection at -3pi/8? Which is before the endpoint at -pi/2...

RuiAce

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Re: Mathematics Question Thread
« Reply #73 on: May 08, 2016, 08:43:29 pm »
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jakesilove

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Re: Mathematics Question Thread
« Reply #74 on: May 08, 2016, 09:09:24 pm »
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Hey Jake,
Thanks for the help! But i'm a little confused, isn't there another intersection at -3pi/8? Which is before the endpoint at -pi/2...

Hmm this is true, not sure how I missed that (was cracking out an answer on the bus, so I'll blame it on that...). I'm unfortunately not home at the moment, but will just admit my mistake and let someone else correct me. Sorry about that! You may even be able to get to an answer based roughly on my method (although hopefully more correctly).

Jake
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Studying a combined Advanced Science/Law degree at UNSW