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  • By lue42 in Superman: Seriously! Why didn't you do one about Life, the Universe, and Everything? read in context
  • By Rafi in The Math Genie: Math Genie: You have one wish! Person: I want to have a pie! Math Genie: Wish granted! In the person's hand is 3.14 read in context
  • By Pirenz in Difference Between Numbers And People: Digits of pi: 3.14159265358979323846264338327950288419716939937510582097494459230781640628620899862803482534211706798214808651... By d way I know more digits than I typed. How about you? read in context
  • By Pirenz in New Bike: No, for differing humans and robots (at least what I think) read in context
  • By Pirenz in Have You Heard?: LOL - look at the dog, BronzeO! read in context
  • By Pirenz in Square the Circle: SQUARE IN the circle vs. SQUARING the circle -LOL Use your ears. This is more of an English joke than a math joke! read in context
  • By Pirenz in Square the Circle: No! According to Wikipedia, squaring the circle is a challenge to only use a straightedge and a compass to make a square which has the same area as a circle! Since pi is a transcendental number, it isn't a constructible number. So therefore it cannot be done! And this is also why "squaring the circle" is also used a figure of speech meaning something which is impossible to do. read in context
  • By Pirenz in Alex Worked At K-Mart: The sqrt(x) function only gives the positive number for which when squared gives the original. If it gives both the + and the - solution the quadratic formula will be: x=(-b+sqrt(b^2-4ac))/(2a) - LOL As I was saying since square root only counts the + then: (sqrt(2)+sqrt(8))^2 =(sqrt(2))^2+2*(sqrt(2)*sqrt(8))+(sqrt(8))^2 =2+2*(sqrt(2*8))+8 =10+2*sqrt(16) =10+2*4=10+8=18 Again square roots only give the + And yes, I am a nerd. Bye read in context
  • By Pirenz in Wanna Multiply?: Good joke there! Because (2x2) times a (2x3) gives another (2x3) and a (2x3) times a (3x3) gives yet another (2x3). I got those facts from these axioms (or are they theorems or... well you get it): A) To multiply matrices the middle numbers should match B) The product is shown by the outsides And yes, I'm a nerd. read in context
  • By Maker5000 in Eggnog by Serge Lang: Nothing happened! read in context
  • By DrMath in Not Normal: Even allowing complex values, slightly more complicated definition, only "1" will work. read in context
  • By DrMath in Let a equal...: Algebraic Number Theory owes a great deal to Germans and uses certain German letters: their D for example. read in context
  • By DrMath in Love Tunnel: Same happens with 2 5; 06 25; 390 625; 39 0625; 82128 90625; etc. and with 3 6; 57 76; 109 376; etc. For the first of these, the least significant halves of these are the endings (1 digit longer) of the previous endings squared. The most significant half comes from squaring the least significant halves. The second are similar, but the least significant halves are 10^n-(first answers). I.e., 376=1001-625. read in context
  • By Zach in Game Show: I laughed so hard, best one yet. Those damn statisticians and there paradoxes. It's a shame it didn't continue into infinity then he'd be set... Sorta read in context
  • By Mr Same in Eggnog by Serge Lang: Same : ( mrsame@gmail.com read in context
  • By Peter in Eggnog by Serge Lang: I miss this comic. I keep checking back hoping it will be updated only to find the same thing I saw the last 40 times... :'-( read in context
  • By david youse in Freak out your students: Shouldn't step 2 be done first? read in context
  • By Pirenz in The Math Genie: Wisher: I wish that I can have infinite pies (Outcome: Genie fills the universe with Gaussian curves, round objects, infinite series, etcetera) LOL read in context
  • By Pirenz in Favorite number: Wow, I guess 73 really really really really really really really links with itself read in context
  • By Pirenz in Alex Was Having Second Thoughts: Finally, someone who understands.... read in context
  • By Pirenz in Alex Was Having Second Thoughts: They're not dividing nor multiplying, they're adding Remember that the equation for any circle is (x-h)^2+(y-k)^2=r^2 Where (h,k) is the center and r is the radius For the unit circle h=k=0 and r=1 So it becomes x^2+y^2=1 Recall that x=cos(A) and y=sin(A) Plugging those in shows the identity we need See? read in context
  • By Pirenz in Alex Was Having Second Thoughts: No, no, no you have it wrong. They're not multiplying, they're adding Remember that the equation is (x-h)^2+(y-k)^2=r^2 So for the unit circle it will be x^2+y^2=1 Recall then x=cos(A) and y=sin(A) Plugging them in shows the identity needed See? read in context
  • By Pirenz in So You're a Mathematician?: I see what you did. You remembered that (a+b)(a-b)=a^2-b^2 And you set a equal to 12 and b equal to one So 11 times thirteen equals twelve squared minus one which is 144-1 or 143 read in context
  • By Pirenz in So You're a Mathematician?: You are correct but only for 2 digit numbers. For numbers with more than 2 digits the method is slightly different. 234x11 2574 The way to get the first and last digit are the same but we do not add 2, 3, and 4 all together. We only add 2+3=5 and 3+4=7. read in context
  • By Pirenz in Airport Please: The taxi driver is getting crazy because we all know that for all triangles that exist, the sum of any pair of sides will be longer than the one you left out. In this situation we can use algebra and the Pythagorean Theorem to find out that airport road is shorter by 2ab where a and b are the lengths of Main Street and first avenue. LOL. Hats off to the passenger! read in context
  • By awesomeness in Eggnog by Serge Lang: that is so cool (lol) read in context
  • By Guest in Eggnog by Serge Lang: "updated \varepsilon>0 times per month" There's nothing sadder than seeing an epsilon equal to zero :( read in context
  • By Megan in Number Theory Conference: No you are not going to prove the Riemann hypothesis. read in context
  • By Karen in One man saw it coming: The distinction between continuing infinitely and reaching infinity can be hard to grasp, especially for one with such problems with the concept of infinity to start. read in context
  • By miniace2009 in High School Memories: I just say "el en"... read in context
  • By vonskippy in Eggnog by Serge Lang: ZZZZZZZZZZzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz read in context
  • By Karen in Pi plus e: No one has rigorously proven that P pie is transcendental, and no one has rigorously proved that S pie is transcendental. read in context
  • By Jen in Countable: This is how numbers can kill a man. read in context
  • By bryce in Alex Worked At K-Mart: the shirt is $10 because when you have (SqrRt2 + SqrRt8)Squared you square the inside of the brackets first and it takes away the square root giving you 2+8=10 you cant have two possible answers in price for 1 shirt unless there is a %off on the shirt at a diffrent time read in context
  • By bob in Holy shift!: You sine of the butcher group! read in context
  • By Eric in Dear Professor: Teachers don't know everything. read in context
  • By Henry feldman in Simple Area Quiz: If you just consider one of the two equal sides as the base, it becomes obvious that the area is a maximum when the other equal side is perpendicular to it, thereby giving the triangle its maximum altitude. The third side is then sqrt2 times it. In this case it's 5*sqrt2=7.07, so it's unclear between 6 and 8 as to which is bigger. So we had to actually do the work. read in context
  • By KB in Proofs (Part 2): How do you do an induction proof without the base case (in order to have less case work)? read in context
  • By Somak in Three logicians walk into a bar: nice... read in context
  • By Andrew in Happy Birthday: I am totally gonna use that birthday card idea someday read in context
  • By MikeBear in Three logicians walk into a bar: He would say "No, but I would like one." read in context
  • By Hyon Halvorson in Clever Alex: Quote: "... As in, I decided to unfriend my roommate on Facebook after we had a fight.'..." read in context
  • By mimi ells in 5 tomato feet: or you can say: 5 ppl went 2 a resturant and 8 nothing. (nothing is supposed to be 0) :P read in context
  • By bmonk in Proofs (Part 1): I've heard much the same story about, "Now, from this it is obvious that . . ." read in context
  • By 0.00001 in The Hardest Lolgic Puzzle Evar!: Simple. Call the one on your left A, the middle B, the right C. Ask A if B lies more often than C. If he says yes, ask B the next question, otherwise ask it to C. Suppose you ask B. Ask which of the other two lies more often. The one B does not answer is Random. Then ask if he exists. If B says yes he is True, otherwise he is False. Edit: forgot about DA and JA. Ask if the cat answers Da to the above questions. read in context
  • By 000000 in Math Parents: Probability zero does not mean it cannot happen. Suppose I randomly pick an integer what is the probability I pick 63? It's zero, but I still could pick 63. read in context
  • By 00000 in MPF - Hats: If you see a mix, guess the opposite, else pass. 75% chance of winning read in context
  • By dillion in Eggnog by Serge Lang: Ddffdddd read in context
  • By jay in MFT - Lake Escape: what about this variation? An escaped prisoner finds himself in the middle of a square swimming pool. The guard that is chasing him is at one of the corners of the pool. The guard can run faster than the prisoner can swim. The prisoner can run faster than the guard can run. The guard does not swim. Which direction should the prisoner swim in in order to maximize the likelihood that he will get away? read in context