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  • By linotype in "Real" Job Interview - Part 4: http://i7.minus.com/ibs8O81MUcHWX4.png shows how to do this with 3 lines. read in context
  • By Uniden in "Real" Job Interview - Part 4: "... four connected straight lines" doesn't work either, because then you could just draw three horizontal lines and one vertical to connect them all. read in context
  • By pnr in "Real" Job Interview - Part 4: I believe the original problem statement is stated wrongly here. Even on a plane, one only needs to draw three horizontal lines to connect all 9 dots. To pose the usual challenge, the question must state "... four connected straight lines". read in context
  • By Anonymous in "Real" Job Interview - Part 4: This is the best comic I've read so far! read in context
  • By Spiked Math in "Real" Job Interview - Part 4: Ignore the paper size, I meant to make it larger before posting. :-( read in context
  • By Loretta in Linear Algebra Problems: WebMD on the doctor's screen? LOL! Thanks @Pirnez for your explanation. I had to pretend I got the joke until I read your post! :) read in context
  • By Eli in A friendly game: These comments talking about the left guy needing one more T to win don't make sense anymore. In the current version, the left guy is H. Did the original version of the comic have the heads/tails sides reversed? read in context
  • By Leon Luna in Three logicians walk into a bar: Not sure, the question is does everyone wants a beer? the first logician answer i dont know (the meaning of this is that this person doesnt know if the others want a beer, same with the se second person , the last person assume that the others want a beer and he answer yes but this is not true we dont know if the first or seconde logician want a beer , for me it doesnt have sense read in context
  • By Pirenz in Tired of adding C?: Lol Let me do one Int(10x)=5x^2-tan(monkey)+42, where monkey is any constant read in context
  • By Jayuan Yao in Three logicians walk into a bar: ohhhhhhhhhhhhhh I see read in context
  • By Meg in Three logicians walk into a bar: Funnily enough, they all struck me as looking female, and that was before I even read your comment. I think perhaps because they all look like they are wearing dresses (the triangular garment registers as a dress to me, and their hair and faces don't register as particularly male, so it defaults to female in my mind). Strange how differently our biases play out, isn't it? read in context
  • By Pirenz in Number Theory Exam: Cool! So therefore you proved that x^3-x^2+3x=16 has no integer roots by using method of contradiction! Q.E.D. read in context
  • By Pirenz in The Math Genie: Wisher: I wish that I do not exist Genie turns the Wisher to the tangent of 90 degrees (undefined) read in context
  • By Pirenz in MFT - Tau: Why can't we use BOTH pi and tau? And seriously, why do you want to get rid of pi when it takes a part in what happened before in the past? read in context
  • By Pirenz in Mathematician anagrams: That website was cool! Anagram: A main thematic read in context
  • By Pirenz in The Prof Liked Xi: You mean x1=(-b+sqrt(b^2-4ac))/(2a) And to get x2 take the conjugate of the numerator of the fraction that x1 is equal to. You forgot a negative sign! read in context
  • By Pirenz in Complimentary Angles: Alpha: You are ACUTE angle Beta: Thanks, you too. Math Joker: Yes, and together you are RIGHT read in context
  • By Pirenz in Linear Algebra Problems: Oops... I meant "of", not "if" read in context
  • By Pirenz in Favorite number: I get it! Gary look.. 1400/33=42.424242424242.... The 42 is not only the whole number part, it is also the period that repeats! read in context
  • By Pirenz in Happy Tau Day: Good one! Pi*e Pie Pie is a delicious food! Hahahaha! Funny joke! read in context
  • By Pirenz in The Movie Math Quiz: It is sines! Duh, the sine wave passes through the origin yet the cosine has a y-intercept of (0,1) Lol! It is like Pau Amma said! read in context
  • By Pirenz in April Fools Math: Actually, the teacher has a point. It is impossible on a plane (Euclidean) yet might be possible on a non-Euclidean space. read in context
  • By Pirenz in 100: Lol! I see what you did! I think you counted the number of letters! Yet just to be sure.... In your system is this true: 1 is 3 7 is 5 12 is 6 read in context
  • By Pirenz in Square the Circle: Seriously?! This is easy! SQUARING the circle SQUARE IN the circle! Lol! By the way, squaring the circle means making a square with the same area as a given circle using the compass and straightedge. This is an impossible task since pi is not an algebraic number, so it is not a constructible number since all constructible numbers are algebraic. And yeah, I'm a nerd read in context
  • By Pirenz in Clever Alex: Come on, just read it literally and you will get the joke! There isn't much math (or maths, whatever you call it) to this one! read in context
  • By Pirenz in Wanna Multiply?: Good one! Because (depending on the order) a 2x3 matrix can multiply with either 2x2 2x3=2x3 2x3 3x3=2x3 The insides have to be equal, otherwise you cannot multiply the matrices. The outsides tell the dimensions of the product. read in context
  • By Pirenz in Linear Algebra Problems: I get the joke! The system if equations is inconsistent, meaning it has no solution, so no one can get a solution and the doctor can't help. This is because if you multiply the first equation by negative two... -2x-4y-2z=-6 Yet the third equation sets the new left hand side equal to 5 Since -6 doesn't equal 5, it is impossible to get any solution out of the system! Lol And yes I am a nerd read in context
  • By Peter L. Griffiths in Fermat and Van Ceulen Visit 2009: Further to my comments of Dec 2011, the Archimedes calculation of the cotangents and cosecants of very small degrees involves finding the square roots of numbers containing a high number of digits. Apparently Van Ceulen was able to do this by drawing up tables of squares of consecutive numbers to at least 10 digits. From these tables he is then able to obtain the square roots which he needs for the PI calculation. read in context
  • By Lot in Linear Algebra Problems: At least he can calculate a minimal diagnosis set ;) read in context
  • By Greg S in Paradox Day: I must disagree, this is a paradox if you are using proper logic. The main premise is that the day cannot be known ahead of time and, as we all agree, once you arrive at Dec 30, we would know the holiday must be Dec 31 thereby eliminating this day as a possibility...permanently. We all know logically that it can't be the last day of the year, ever, from now until the end of time, so it doesn't require seeing into the future to know this. The only way that would be true is if we didn't know how long the year was and we awoke every day of December surprised that it's still not January. What I think is being missed is that we know ALL YEAR LONG that the holiday cannot be on Dec 31 as that would violate the very nature of the holiday, thus I cross it off my calender. Therefore, when I get to Dec 29 I have the pre-knowledge that Dec 31 was never a possibility so Dec 30 is now the only option. But I can logically figure that out ahead of time too, as I just did in real life, so Dec 30 gets crossed off the calendar too. Rinse and repeat and you've just crossed off every day just as the cartoon suggests. read in context
  • By Noah Weiss in Linear Algebra Problems: Not sure that I'd trust a doctor that has WebMD visible on their computer :) read in context
  • By TheAwesomeness in Five things successful teachers do on the first day of class: Awesome! read in context
  • By Jonathan in Linear Algebra Problems: At least it's not an imaginary disease where the medicine could have complex side effects. read in context
  • By Name in Five things successful teachers do on the first day of class: If someone can keep up with that professor, he's going to be successful too! read in context
  • By bmonk in Mobius Wedding Band: Should this comic put me on edge--only one, of course--the way it does? read in context
  • By bmonk in Proofs (Part 2): Wouldn't having induction without a base case make it a perfectly elegant proof? (snerk!) read in context
  • By Foci in Video comics #1 and 2: Yea. read in context
  • By MD in Video comics #1 and 2: I liked the non animated comics better ... read in context
  • By lm_aquarius in Video comics #1 and 2: Yeeeaah.... That came unexpected. New comic again! Gather up, people! read in context
  • By KB in Eggnog by Serge Lang: This was the 2014 Christmas comic. Don't expect anything new until after! read in context
  • By Mr. R in Geeky pin numbers: I want this as a poster! My students would love it. 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