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October 31, 2025, 04:10:56 am
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Author Topic: Maths Extension 2 Discussion 2017  (Read 36900 times)

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pikachu975

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Re: Maths Extension 2 Discussion 2017
« Reply #15 on: October 23, 2017, 06:52:10 pm »
Omg got 9/10 in MC forgot about the z-1
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RuiAce

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Re: Maths Extension 2 Discussion 2017
« Reply #16 on: October 23, 2017, 06:59:15 pm »
Quote from: pikachu975 on October 23, 2017, 06:43:35 pm
Yep same graph and they had same foci
So many weird things this year lol
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statues

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Re: Maths Extension 2 Discussion 2017
« Reply #17 on: October 23, 2017, 07:01:15 pm »
the multiple choice was a bit more difficult than past years I think, but otherwise I thought it was pretty standard
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BradMate

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Re: Maths Extension 2 Discussion 2017
« Reply #18 on: October 23, 2017, 07:14:58 pm »
Do you have solutions?
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RuiAce

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Re: Maths Extension 2 Discussion + Suggested Answers 2017
« Reply #19 on: October 23, 2017, 07:27:54 pm »
Quote from: BradMate on October 23, 2017, 07:14:58 pm
Do you have solutions?
Started now


Correct me if there's any disagreement
« Last Edit: October 23, 2017, 07:36:07 pm by RuiAce »
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YmerBushati

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Re: Maths Extension 2 Discussion 2017
« Reply #20 on: October 23, 2017, 07:52:22 pm »
Your Q11 b) is wrong. Almost 100% certain it is tan-1(1/root3) = pi/6
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xkevinz

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Re: Maths Extension 2 Discussion 2017
« Reply #21 on: October 23, 2017, 07:52:55 pm »
Solution for Q11 is wrong, where alpha = tan^-1(1/3)

The answer is alpha = tan-1 (1/root3) = pi/6.
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maria19990

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Re: Maths Extension 2 Discussion 2017
« Reply #22 on: October 23, 2017, 07:53:56 pm »
i agree that alpha is pi/6 for q11
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xkevinz

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Re: Maths Extension 2 Discussion 2017
« Reply #23 on: October 23, 2017, 08:02:31 pm »
Anyone find this test easier than all the previous tests in the past 6-7 years? None of the past papers I did were as easy as this (no joke).

So far, i have dropped 3 marks out of silly mistakes.
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RuiAce

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Re: Maths Extension 2 Discussion 2017
« Reply #24 on: October 23, 2017, 08:07:13 pm »
Yeah right on for 11b, forgot about the square rooting
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pikachu975

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Re: Maths Extension 2 Discussion 2017
« Reply #25 on: October 23, 2017, 08:07:22 pm »
Q1 is meant to be C because x^8 = 1 gives z = 1 as one solution
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RuiAce

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Re: Maths Extension 2 Discussion 2017
« Reply #26 on: October 23, 2017, 08:09:14 pm »
Quote from: pikachu975 on October 23, 2017, 08:07:22 pm
Q1 is meant to be C because x^8 = 1 gives z = 1 as one solution
Yep, clumsiness
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RuiAce

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Re: Maths Extension 2 Discussion 2017
« Reply #27 on: October 23, 2017, 08:23:41 pm »
Not confident with my trapezoidal volumes. Does anyone want to check it?
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pikachu975

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Re: Maths Extension 2 Discussion 2017
« Reply #28 on: October 23, 2017, 08:33:51 pm »
Quote from: RuiAce on October 23, 2017, 08:23:41 pm
Not confident with my trapezoidal volumes. Does anyone want to check it?

Should be something else I'll check what is wrong now

EDIT: Base isn't 2x you need more similar triangles
« Last Edit: October 23, 2017, 08:38:40 pm by pikachu975 »
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Offering tutoring for Biology, Maths, Maths Ext 1, and Maths Ext 2.
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// English Adv // Bio // Phys // 3U Maths // 4U Maths //

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RuiAce

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Re: Maths Extension 2 Discussion 2017
« Reply #29 on: October 23, 2017, 08:41:16 pm »
Quote from: pikachu975 on October 23, 2017, 08:33:51 pm
Should be something else I'll check what is wrong now

EDIT: Base isn't 2x you need more similar triangles
Ah crap I thought something was weird. Thanks.

Will probably get back to it later though
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