SiRaLeX Posted October 3, 2015 Share Posted October 3, 2015 I had to divide 6 through 1.5, so I tried to do it the easy way: 6 / 1 = 6 6 / 2 = 3 The logical assumption would be: 6 / 1.5 = 4.5 Boy, I was wrong! O_o 6 / 1.5 = 4 Yes, that's right, the correct answer is 4! I mean, it's pretty logical if you think about it. Anyone else finds this confusing though? :laugh: Link to comment Share on other sites More sharing options...
Jacko Posted October 3, 2015 Share Posted October 3, 2015 Yes, that's right, the correct answer is 4! I mean, it's pretty logical if you think about it. Anyone else finds this confusing though? :laugh: No thats just basic Maths. Its not that hard Link to comment Share on other sites More sharing options...
SiRaLeX Posted October 3, 2015 Author Share Posted October 3, 2015 Well, yeah. It's not hard for the calculator. But I tried doing it without and failed. Link to comment Share on other sites More sharing options...
Jacko Posted October 3, 2015 Share Posted October 3, 2015 Well, yeah. It's not hard for the calculator. But I tried doing it without and failed. Maybe you should stick to doing things with calculators available (which is almost everywhere at least) Link to comment Share on other sites More sharing options...
MattAttack Posted October 3, 2015 Share Posted October 3, 2015 um.... yeah.... 60/15=4 and I'm no programmer. Am I missing something? Link to comment Share on other sites More sharing options...
X3M Posted October 3, 2015 Share Posted October 3, 2015 X+X=X*X There are 2 answers to be expected from this math problem and other people to your post. I'll give you the lower number, while you expect people responding with the latter answer. Link to comment Share on other sites More sharing options...
Jacko Posted October 3, 2015 Share Posted October 3, 2015 0 or 2 right? Im assuming thats x(x-2)=0 Link to comment Share on other sites More sharing options...
SiRaLeX Posted October 3, 2015 Author Share Posted October 3, 2015 X+X=X*X There are 2 answers to be expected from this math problem and other people to your post. I'll give you the lower number, while you expect people responding with the latter answer. x +x = x * x 2x = x² 0 = x² -2x x² -2x = 0 0 or 2 right? Im assuming thats x(x-2)=0 x² -2x = 0 x(x -2) = 0 x1 = 0; x2 = 2 Correct. That's a quadratic function! But what does this have to do with the topic? The topic is about weird, confusing division rules! Link to comment Share on other sites More sharing options...
heldro Posted October 3, 2015 Share Posted October 3, 2015 Link to comment Share on other sites More sharing options...
SiRaLeX Posted October 3, 2015 Author Share Posted October 3, 2015 Nothing to be ashamed about, bro, IMHO this is a valid topic. Link to comment Share on other sites More sharing options...
Nyerguds Posted October 4, 2015 Share Posted October 4, 2015 wtf, man. Seriously. wtf. um.... yeah.... 60/15=4 and I'm no programmer. Am I missing something? Or just multiply both parts by 2, and get 6/1.5 = 12/3 = 4 Link to comment Share on other sites More sharing options...
SiRaLeX Posted October 4, 2015 Author Share Posted October 4, 2015 wtf, man. Seriously. wtf. Well, my basic maths is not quite up to snuff. Link to comment Share on other sites More sharing options...
X3M Posted October 4, 2015 Share Posted October 4, 2015 ugh, alright then, I explain the previous post of mine. Answer 0, you get a 0 for not knowing. Answer 2. others could say, hey; me two don't know. I should probably take humour classes in the near future. 6 is my favourite math number. You can do all kind of math tricks with it. 1+2+3=1*2*3 stuff like that. Link to comment Share on other sites More sharing options...
peterthepigeon Posted October 4, 2015 Share Posted October 4, 2015 42 is best cause it's the answer to everything Link to comment Share on other sites More sharing options...
peterthepigeon Posted October 12, 2015 Share Posted October 12, 2015 X+X=X*X There are 2 answers to be expected from this math problem and other people to your post. I'll give you the lower number, while you expect people responding with the latter answer. or in other words, 0, 2 Rearranging stupidly cause well it's fun, only works on 0 and 2 also. 2x = x^2 x = ( ( x^2 ) / 2) Alternatively you could just realize this is a quadratic form also. ax^2 + bx + C = 0 ( x^2 - 2x ) = 0 factor out the x x ( x - 2 ) = 0 Link to comment Share on other sites More sharing options...
SiRaLeX Posted October 12, 2015 Author Share Posted October 12, 2015 Thanks X3M for derailing a topic about weird division rules into a topic about quadratic functions. Link to comment Share on other sites More sharing options...
X3M Posted October 12, 2015 Share Posted October 12, 2015 You rather have people tell you it is 4 then? I don't see what else we can put in this topic, sorry. Weird math = weird math. Link to comment Share on other sites More sharing options...
fir3w0rx Posted October 12, 2015 Share Posted October 12, 2015 I had to divide 6 through 1.5, so I tried to do it the easy way: 6 / 1 = 6 6 / 2 = 3 The logical assumption would be: 6 / 1.5 = 4.5 Boy, I was wrong! O_o 6 / 1.5 = 4 Yes, that's right, the correct answer is 4! I mean, it's pretty logical if you think about it. Anyone else finds this confusing though? :laugh: It's weird to you because you're looking at your little sequence like it's multiplication, and not division which it is. Let me extend the sequence to include your 'weird' assumption: 6 / 1 = 6 6 / 1.5 = 4.5 <-- Alex's anomaly 6 / 2 = 3 You've assumed that dividing 6 by what is HALFWAY between 1 and 2 (which is 1.5) would equal what is HALFWAY between the answers 6 and 3 (which is 4.5), which is obviously incorrect. Now, if it were a multiplication sequence/pattern, then it'll make sense: 6 x 1 = 6 6 x 1.5 = 9 6 x 2 = 12 In this case, MULTIPLYING by what is HALFWAY between 1 and 2 (which is 1.5) does equal what is HALFWAY between the answers 6 and 12 (which is 9). It works with any other sequence. For example: 10 x 10 = 100 10 x 15 = 150 10 x 20 = 200 or 10 x 1.5 = 15 10 x 2 = 20 10 x 2.5 = 25 or whatever. But I do admit that at a glance, especially because of the way you've described it, it did look kinda weird. Link to comment Share on other sites More sharing options...
pichorra Posted October 12, 2015 Share Posted October 12, 2015 X+X=X*X There are 2 answers to be expected from this math problem and other people to your post. I'll give you the lower number, while you expect people responding with the latter answer. x +x = x * x 2x = x² 0 = x² -2x x² -2x = 0 0 or 2 right? Im assuming thats x(x-2)=0 x² -2x = 0 x(x -2) = 0 x1 = 0; x2 = 2 Correct. That's a quadratic function! But what does this have to do with the topic? The topic is about weird, confusing division rules! That is correct only if your algebra is a domain of integrity. (a*b = 0 <=> a = 0 or b = 0) Take, for instance, the ring (Mn®, +, *). Then X(X - 2I) = 0 do not imply that X = 0 or X - 2I = 0 are the only solutions. Take the matrix: [ 2 0 ] [ 0 0 ] It is different from 0 and 2*I and still solves your equation. Link to comment Share on other sites More sharing options...
SiRaLeX Posted October 12, 2015 Author Share Posted October 12, 2015 Thanks Brian, that's the kind of post I've been looking for! Haha, thanks for naming it "Alex's anomaly" - maybe they'll teach this to first or second graders in school and have some good laughs of how stupid I am in a couple of years time. I'd really love having a math problem named after me! So, if: 6 / 1 = 6 6 / 1.5 = 4 6 / 2 = 3 I really wonder what... 6 / X = 4.5 would be? Let's find out! 6 / X = 4.5 | * X 6 = 4.5X | * 2 12 = 9X | / 9 12 / 9 = X 4 / 3 = X 1.3333333 = X Note that there's actually a period on 1.3 (as if this wasn't confusing enough). :laugh: So: 6 / 1 = 6 6 / 1.2 = 5 6 / 1.3333333 = 4.5 6 / 1.5 = 4 6 / 2 = 3 I extended this with 1.2, too, which is interesting - but completely illogical! Weird as phuck! Damn you, maths!!! :ranting: Link to comment Share on other sites More sharing options...
SiRaLeX Posted October 12, 2015 Author Share Posted October 12, 2015 I actually drew the graph of f(x) = 6 / x! :heady: Any math teacher would probably slap me for connecting the dots in a straight line. Link to comment Share on other sites More sharing options...
Jacko Posted October 12, 2015 Share Posted October 12, 2015 Tadaa Its a curve. Which is why its not all regular Link to comment Share on other sites More sharing options...
SiRaLeX Posted October 12, 2015 Author Share Posted October 12, 2015 Thanks, I figured it out. Division sucks and curves are hella confusing! Did you see what happens when you're dealing with negative numbers? x > 0 and dividend > 0 ---> 1st quadrant x > 0 and dividend < 0 ---> 2nd quadrant :ranting: x < 0 and dividend > 0 ---> 3rd quadrant :ranting: x < 0 and dividend < 0 ---> 4th quadrant :ranting: It basically mirrors the graph into any of the said quadrants (pretty sure this is correct, somebody check please). Furter reading: http://zonalandeducation.com/mmts/functionInstitute/rationalFunctions/oneOverX/oneOverX.html Link to comment Share on other sites More sharing options...
pichorra Posted October 12, 2015 Share Posted October 12, 2015 SiRaLex: You should check this tool: http://www.wolframalpha.com/ you can plot graphs, derivate functions, integrate, solve linear systems, etc. Link to comment Share on other sites More sharing options...
SiRaLeX Posted October 12, 2015 Author Share Posted October 12, 2015 SiRaLex: You should check this tool: http://www.wolframalpha.com/ you can plot graphs, derivate functions, integrate, solve linear systems, etc. Pichorra, thank you so much! This shall help me in my quest to master the art of mathematics! But for now... Hilary Duff - The Math xD Link to comment Share on other sites More sharing options...
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