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STPM 2014/2015
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maximR
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 Feb 18 2015, 09:55 PM
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QUOTE(chocobo7779 @ Feb 18 2015, 09:17 PM) RED-HAIR-SHANKS Here's a mini challenge - Your graph have demonstrated that there is one positive solution, where it lies in the interval [2, 3]. How do you get to find the value of the positive solution, with nothing but arithmetic?  Hint: Use a calculator or a spreadsheet software such as Excel - this will be the tools that you will need for this challenge. Iteration? |
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maximR
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Feb 18 2015, 10:08 PM
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QUOTE(chocobo7779 @ Feb 18 2015, 10:01 PM) Somewhat correct, but do not give him the answer....  There are few nice simple numerical methods to try, aren't they covered in STPM? |
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maximR
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Feb 18 2015, 10:25 PM
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QUOTE(chocobo7779 @ Feb 18 2015, 10:18 PM) Yup, but I would like him to figure this out himself... Paradoxically, I'm more interested in learning how they (numerical methods) work instead of putting them to work. Once I know how, say, iteration works, I feel that doing questions are a waste of time, you're basically mindlessly plugging in values. Computers are much more superior in performing numerical calculations, I feel that trapezium method, continuity correction, statistical calculations etc. are a complete waste of time. |
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maximR
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Feb 24 2015, 01:23 PM
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» Click to show Spoiler - click again to hide... « QUOTE(RED-HAIR-SHANKS @ Feb 22 2015, 10:16 PM) Just Visiting By, can you recommend me some good sites on where I can find the literature review for my Physics assignment? My assignment revolves around the Interference of Sound Waves. I'm in a muddle here, because my teacher informed me a few days ago that without an adequate literature review, I will be coerced to switch my title of experiment. Now, I'm halfway done on Abstract, Theory, Problem Statement, Objectives and Methodology. My friends and I went to USM last December to find some stuffs pertaining to our Physics/Chemistry assignments and we already took some photos for our bibliography, so that just leaves us with literature review and and a few more components(Observations, Discussions...). And yes, my friend and I did searched the Internet for days, and we found a handful of literature reviews, but they weren't related with our assignments. We could hardly find any suitable samples from ResearchGate and Scribd. It will be really appalling to restart our Physics assignment all over again back to square one. Thanks in advance. There are tons of free scientific literature, university lecture notes, and archived books available online. Search carefully. Type 'sound interference pdf' and you'll find a lot of good ones. Tip: Type something, then 'pdf', chances are you'll find quite a few good university lecture notes. |
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maximR
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Mar 5 2015, 11:09 PM
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QUOTE(RED-HAIR-SHANKS @ Mar 5 2015, 10:42 PM) maximR, in my previous post #903, I made a mistake somewhere in my calculation. Is it safe to assume that the mass of charge W is equivalent to the mass of charge X,  ? If that assumption of mine is correct, then I will obtain 2 as my final answer. I don't think I can answer that, perhaps you'd want to ask somebody else? I vaguely remember the relationship between mass and charge in magnetism, but I haven't learned anything other than basic SPM magnetism. Try Googling that. But I'll re-read the question tomorrow when I can actually think straight; I just reached home (from college), exhausted beyond words. |
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maximR
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Mar 8 2015, 08:24 PM
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» Click to show Spoiler - click again to hide... « QUOTE(RED-HAIR-SHANKS @ Mar 8 2015, 06:26 PM) maximR, here I have 2 different methods in solving the integration of: ∫secθtanθsecθ dθ. Both methods seem correct to me, but, they yield different answers. Method 1: -Let f(x)=secθ -So f'(x)=secθtanθ  Method 2: -Let f(x)=tanθ -So f'(x)=sec²θ  Which is acceptable? They are the same, remember your identity involving tan(x)? |
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