Renegade343 Posted October 12, 2015 Share Posted October 12, 2015 Never, never, never do this: log(x/y) = log(x) / log(y) It baffles and infuriates me the number of times various people do this (that also includes a few of those being good in math), then wonder where the hell did they go wrong with their calculations for quite some time. Yes, I know there are some values of x and y such that these relationship holds true, but for the majority of cases, it is not. Link to comment Share on other sites More sharing options...
bejuizb Posted October 12, 2015 Share Posted October 12, 2015 I remember learning this when I decided to be an engineer 2 years ago. Good thing I abandoned it lol. Abstract math was painful. Link to comment Share on other sites More sharing options...
(XBOX)Ghostayamu Posted October 12, 2015 Share Posted October 12, 2015 I've always been great at math. Link to comment Share on other sites More sharing options...
zoboso Posted October 12, 2015 Share Posted October 12, 2015 I thought it was log(x/y) = log(x) - log(y), Unless we are talking about trees because we are really board. Link to comment Share on other sites More sharing options...
TheOnlyWarBear Posted October 12, 2015 Share Posted October 12, 2015 Why not just start finding the second derivative of 2x^2-4y^3? Link to comment Share on other sites More sharing options...
Richtor2415 Posted October 12, 2015 Share Posted October 12, 2015 That feeling when you think this is just another butthurt tenno complaining about something that hasen't come out yet, but instead it's about something you have no knowledge of, and just decide to go to bed before you explode. Link to comment Share on other sites More sharing options...
egregiousRac Posted October 12, 2015 Share Posted October 12, 2015 That feeling when you think this is just another butthurt tenno complaining about something that hasen't come out yet, but instead it's about something you have no knowledge of, and just decide to go to bed before you explode. Welcome to Renegade343. Enjoy your stay. Link to comment Share on other sites More sharing options...
LoopStricken Posted October 12, 2015 Share Posted October 12, 2015 snip Please, just stop. Link to comment Share on other sites More sharing options...
DJ_Vauban Posted October 12, 2015 Share Posted October 12, 2015 Math jokes/things...I am too dumb to understand them Link to comment Share on other sites More sharing options...
321agemo Posted October 12, 2015 Share Posted October 12, 2015 (edited) Never, never, never do this: ln(x/y) = ln(x) / ln(y) It baffles and infuriates me the number of times various people do this (that also includes a few of those being good in math), then wonder where the hell did they go wrong with their calculations for quite some time. Yes, I know there are some values of x and y such that these relationship holds true, but for the majority of cases, it is not. Ftfy. Only natural logarithms please.For those that don't get it. The actual rule for ln is this: Ln(x/y) = ln(x)-ln(y). Explaining what is ln, why its that rule takes a long time and i rather not type it out on my phone Edited October 12, 2015 by 321agemo Link to comment Share on other sites More sharing options...
Renegade343 Posted October 12, 2015 Author Share Posted October 12, 2015 Ftfy. Only natural logarithms please. There are two common logarithm bases used for calculations: Base e, or base 10. I choose whatever base I want, hence I choose base 10 for this example. I could even choose something such as base 23 (or any base for that matter) to prove that relationship is not true, by showing that the solution set for log(x/y) = log(x) / log(y) with any base does not have any real solutions (in which for the majority of cases, complex number solutions are disregarded). As for that relationship you wrote, everyone should know it if they study logarithms and exponents in high school. It is one of the simplest rules of logarithms, and I am wondering how people still mess that up. Link to comment Share on other sites More sharing options...
Colonel_Ignes Posted October 12, 2015 Share Posted October 12, 2015 (edited) I thought it was log(x/y) = log(x) - log(y), Unless we are talking about trees because we are really board. Yea you got it. This guy/gal just thinks he's/she's cool and only provided the most superficial nature of the issue to attest to his/her intellect rather than actually provide something useful (always possibility they are catering to a specific audience or something else but I doubt it). See example: If you have a patient come into the emergency room with chest pain, dilated pupils and a bloody nasal turbinate never give them a beta blocker. Vs If you have a patient come into the emergency room with chest pain, dilated pupils and bloody nasal turbinate never give them a beta blocker. These are red flags for cocaine induced coronary vasospasm. (Cocaine is causing the vessels in your heart to mess up) and giving them a beta blocker will cause the chemicals in your body to cause an unopposed alpha effect. (It will make the situation worse by causing your vessels to constrict) Obligatory: Always consult your physician if you are concerned and this statement is not intended to serve in lieu of seeking proper medical care Edited October 12, 2015 by Colonel_Ignes Link to comment Share on other sites More sharing options...
notlamprey Posted October 12, 2015 Share Posted October 12, 2015 Hey, what does the B in Benoit B. Mandelbrot stand for? It stands for Benoit B. Mandelbrot. Link to comment Share on other sites More sharing options...
Renegade343 Posted October 12, 2015 Author Share Posted October 12, 2015 Yea you got it. This guy/gal just thinks he's/she's cool and only provided the most superficial nature of the issue to attest to his/her intellect rather than actually provide something useful (always possibility they are catering to a specific audience or something else but I doubt it). See example: No, because I get tired of people doing this. Constantly. Also, I have already made useful proofs around here. You just did not search them. Link to comment Share on other sites More sharing options...
SHIR0B0N Posted October 12, 2015 Share Posted October 12, 2015 (edited) Why not just start finding the second derivative of 2x^2-4y^3? That's really easy mate. I had this 5 years ago but even I could solve that. 4x is the first derivative. 4 is the second derivative. Edit: I should mention, that Y is considered a constant. It doesn't intervene in the calculation. It's just there to mess up people's minds. Edited October 12, 2015 by SHIR0B0N Link to comment Share on other sites More sharing options...
(XBOX)Grihaly Posted October 12, 2015 Share Posted October 12, 2015 What does that even mean? Math pun, ha-ha. Link to comment Share on other sites More sharing options...
TheBrsrkr Posted October 12, 2015 Share Posted October 12, 2015 Is this crystal math? Link to comment Share on other sites More sharing options...
Hayzemet Posted October 12, 2015 Share Posted October 12, 2015 It bs tbh, unless you are a scienceguy this crap aint gonna do S#&$ for common engineers, where you have to think in relal numbers and modified cars Link to comment Share on other sites More sharing options...
TheOnlyWarBear Posted October 13, 2015 Share Posted October 13, 2015 That's really easy mate. I had this 5 years ago but even I could solve that. 4x is the first derivative. 4 is the second derivative. Edit: I should mention, that Y is considered a constant. It doesn't intervene in the calculation. It's just there to mess up people's minds. I should have asked to find the second derivative in terms of dy/dx lol Link to comment Share on other sites More sharing options...
321agemo Posted October 13, 2015 Share Posted October 13, 2015 As for that relationship you wrote, everyone should know it if they study logarithms and exponents in high school. It is one of the simplest rules of logarithms, and I am wondering how people still mess that up. Its just one of those things people can get confuse on, as the logorithm rules doesnt follow “conventional” mathematics. And i said natural logorithms because those are used in offical proofs instead of base 10 or whatever. But also as a witty comment. Link to comment Share on other sites More sharing options...
MechaTails Posted October 13, 2015 Share Posted October 13, 2015 Math jokes/things...I am too dumb to understand them Its okay, math isnt necessary anyway, you can just eyeball everything. Link to comment Share on other sites More sharing options...
TheBrsrkr Posted October 13, 2015 Share Posted October 13, 2015 Math is the greatest form of heresy. Link to comment Share on other sites More sharing options...
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