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October 03, 2025, 03:22:31 am
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Author Topic: nasty creature?  (Read 590 times)  Share 

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Martoman

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nasty creature?
« on: August 14, 2010, 01:55:05 pm »
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A good friend of mine sent me a maths question and I have a solution, but he doesn't have answers so I defer here to ensure that what I have done is correct.

Find the amplitude of

So because its disgusting what I did was use the compound angle formula to make it neater. After doing so we simply get a single trig function in the form and with

simply then thus range = []

I want to know if that compound angle thing is valid to do and if so, can we be asked such a question ( I didn't do yr 11 spesh so this could be the case, but it isn't in the study design).
« Last Edit: August 14, 2010, 02:12:29 pm by Martoman »
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2009: Math methods: 50, Psychology: 44
2010: chem 47, further 48, Spesh 49 fml seriously and other yr 11 subs.
2011: Holidaying, screw school.
No. Not azn.
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brightsky

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Re: nasty creature?
« Reply #1 on: August 14, 2010, 02:09:16 pm »
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Yep, amplitude is .
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Martoman

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Re: nasty creature?
« Reply #2 on: August 14, 2010, 02:11:45 pm »
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sweet so what i did wasn't hack maths but actually valid?
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2009: Math methods: 50, Psychology: 44
2010: chem 47, further 48, Spesh 49 fml seriously and other yr 11 subs.
2011: Holidaying, screw school.
No. Not azn.
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Swedish meal time all the time

brightsky

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Re: nasty creature?
« Reply #3 on: August 14, 2010, 02:14:49 pm »
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Yep. I was confused for a sec with the period lol.  :P
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2020 - 2021: Master of Public Health, The University of Sydney
2017 - 2020: Doctor of Medicine, The University of Melbourne
2014 - 2016: Bachelor of Biomedicine, The University of Melbourne
2013 ATAR: 99.95

Currently selling copies of the VCE Chinese Exam Revision Book and UMEP Maths Exam Revision Book, and accepting students for Maths Methods and Specialist Maths Tutoring in 2020!

Martoman

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Re: nasty creature?
« Reply #4 on: August 14, 2010, 02:18:36 pm »
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yeah I fixed that up after reading it :S

hehe I just googled this and found it it was a rule... wow I could have just done this to start with.
Logged
2009: Math methods: 50, Psychology: 44
2010: chem 47, further 48, Spesh 49 fml seriously and other yr 11 subs.
2011: Holidaying, screw school.
No. Not azn.
___________________________________
Swedish meal time all the time
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