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April 28, 2024, 12:00:41 pm

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How do you think you went?

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That last question...
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Author Topic: Methods Exam Discussion!  (Read 6904 times)

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Commercekid2050

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Re: Methods Exam Discussion!
« Reply #45 on: November 03, 2021, 02:53:37 pm »
Last question was painful.

I found last question to be kind of tricky. Other than that exam was not that bad.
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Stormbreaker-X

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Re: Methods Exam Discussion!
« Reply #46 on: November 03, 2021, 03:00:39 pm »
Quote from: Riley Taylor on November 03, 2021, 02:48:33 pm
Worst fear, a few stupid errors on easy questions
This fear is definitely seen in further math.
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Writing Overload

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Re: Methods Exam Discussion!
« Reply #47 on: November 04, 2021, 02:19:24 pm »
How did everyone find the exam?


Also did anyone get 0 for the very very last question? (Or was it just me?)
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Riley Taylor

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Re: Methods Exam Discussion!
« Reply #48 on: November 04, 2021, 03:29:17 pm »
Quote from: Writing Overload on November 04, 2021, 02:19:24 pm
How did everyone find the exam?


Also did anyone get 0 for the very very last question? (Or was it just me?)

I got 0 as well, but not sure about it. It assumes each minima of sin(x/a) is matched by a maxima of cos(ax) and visa versa which I am not sure is possible.
« Last Edit: November 04, 2021, 03:31:27 pm by Riley Taylor »
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Riley Taylor

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Re: Methods Exam Discussion!
« Reply #49 on: November 04, 2021, 03:34:17 pm »
Quote from: Riley Taylor on November 04, 2021, 03:29:17 pm
I got 0 as well, but not sure about it. It assumes each minima of sin(x/a) is matched by a maxima of cos(ax) and visa versa which I am not sure is possible.


Looking at Desmos, I see at a values close to 0, the maximum minimum value approaches 0 however I believe a was restricted to being only integers, in which case the maximum minimum is -1.
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butterflypea

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Re: Methods Exam Discussion!
« Reply #50 on: November 04, 2021, 08:53:04 pm »
what study score should I expect if I estimate about 2-5 marks lost in total across both exams? thx
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Orb

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Re: Methods Exam Discussion!
« Reply #51 on: November 04, 2021, 09:27:08 pm »
Quote from: butterflypea on November 04, 2021, 08:53:04 pm
what study score should I expect if I estimate about 2-5 marks lost in total across both exams? thx

47-50, but likely 48-49, well done!
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AnonymousCube

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Re: Methods Exam Discussion!
« Reply #52 on: November 04, 2021, 10:21:33 pm »
What's would be a cutoff mark/120 for a 45 raw and a 50 raw respectively? IMO, both exams seemed slightly easier than usual, although exam 1 did have a few traps where one could easily lose marks.

P.s I got -sqrt(2) for the last question, when a = 1, can anyone verify/disprove my answer?
« Last Edit: November 04, 2021, 10:48:30 pm by AnonymousCube »
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GoodGod

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Re: Methods Exam Discussion!
« Reply #53 on: November 04, 2021, 11:27:42 pm »
Quote from: AnonymousCube on November 04, 2021, 10:21:33 pm
What's would be a cutoff mark/120 for a 45 raw and a 50 raw respectively? IMO, both exams seemed slightly easier than usual, although exam 1 did have a few traps where one could easily lose marks.

P.s I got -sqrt(2) for the last question, when a = 1, can anyone verify/disprove my answer?

I am not sure what the cutoff is, but I am convinced that I got 38/40 for exam 1 and 76/80 for exam 2, which is a bit worse than I'd have hoped but oh well, its all done now..
As for that last question, I did not read it properly, so I gave the wrong answer. However I found out that even though many people got -sqrt(2) as the answer, the actual answer is -1 as when a approaches a very high number (in the billions) the minimum value is extremely close to -1.
I'm pretty sure it required limits to work out.
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