Niko Posted October 4, 2007 Report Share Posted October 4, 2007 got out my calculator now... great formula for when the nine on the calculator isn't working any more... (who needs more than three digits after all..) Quote Link to comment Share on other sites More sharing options...
Aggie87 Posted October 4, 2007 Report Share Posted October 4, 2007 Quote Link to comment Share on other sites More sharing options...
7/4 Posted October 4, 2007 Report Share Posted October 4, 2007 A different, yet valid approach. Quote Link to comment Share on other sites More sharing options...
catesta Posted October 4, 2007 Report Share Posted October 4, 2007 Quote Link to comment Share on other sites More sharing options...
Niko Posted October 4, 2007 Report Share Posted October 4, 2007 (edited) (the expression on the left hand side of aparaxas formula gives 18,999098... or something like that, so its a close approximation to a fancy way of writing 19...) (and if the 9 on your calculator isn't working anymore and you don't want to write 8+1 this is another way to go, no, not very funny) Edited October 4, 2007 by Niko Quote Link to comment Share on other sites More sharing options...
BruceH Posted October 4, 2007 Report Share Posted October 4, 2007 E=mc2 Though I think I may not be the first to use it. Quote Link to comment Share on other sites More sharing options...
Hot Ptah Posted October 4, 2007 Report Share Posted October 4, 2007 Professor Weirdo: Six drops of Essence of Terror, Five drops of Sinister Sauce; Count Kook: When the stirring's done, can I lick the spoon? Professor Weirdo: Of course! A-ha! Of course! Now for a pinch of tenderness But I must use only a touch, For without a touch of tenderness He might destroy me! [Kook accidentally knocks Weirdo's arm] Professor Weirdo: OOPS! Too much! [with stethoscope] Professor Weirdo: Better hold your breath; it's starting to tick! Count Kook: Better hold my hand; I'm feeling sick! [the monster arises] Milton The Monster: Hello, Daddy! Professor Weirdo: Good heavens! What have I done? Milton The Monster: I'm Milton, your brand new son! Quote Link to comment Share on other sites More sharing options...
alocispepraluger102 Posted October 4, 2007 Author Report Share Posted October 4, 2007 (edited) http://www.1728.com/quadratc.htm who of us can ever forget this from 7th grade math? Edited October 4, 2007 by alocispepraluger102 Quote Link to comment Share on other sites More sharing options...
catesta Posted October 4, 2007 Report Share Posted October 4, 2007 http://www.1728.com/quadratc.htm who of us can ever forget this from 7th grade math? Ummmm...... Quote Link to comment Share on other sites More sharing options...
Hot Ptah Posted October 4, 2007 Report Share Posted October 4, 2007 http://www.1728.com/quadratc.htm who of us can ever forget this from 7th grade math? I went to a Catholic school in 7th grade. We were still learning fractions. Quote Link to comment Share on other sites More sharing options...
alocispepraluger102 Posted October 4, 2007 Author Report Share Posted October 4, 2007 http://www.1728.com/quadratc.htm who of us can ever forget this from 7th grade math? I went to a Catholic school in 7th grade. We were still learning fractions. the ptah was an alter boy? Quote Link to comment Share on other sites More sharing options...
Dan Gould Posted October 4, 2007 Report Share Posted October 4, 2007 http://www.1728.com/quadratc.htm who of us can ever forget this from 7th grade math? I went to a Catholic school in 7th grade. We were still learning fractions. I wasn't in Catholic school but I know I didn't encounter quadratics before eighth grade, and I was in "advanced" math. Most of my classmates didn't get it until 9th grade. Quote Link to comment Share on other sites More sharing options...
Hot Ptah Posted October 4, 2007 Report Share Posted October 4, 2007 http://www.1728.com/quadratc.htm who of us can ever forget this from 7th grade math? I went to a Catholic school in 7th grade. We were still learning fractions. the ptah was an alter boy? I was, in fact, from 5th grade until 8th grade. John Kerry and I have that in common! Quote Link to comment Share on other sites More sharing options...
alocispepraluger102 Posted October 4, 2007 Author Report Share Posted October 4, 2007 http://www.1728.com/quadratc.htm who of us can ever forget this from 7th grade math? I went to a Catholic school in 7th grade. We were still learning fractions. the ptah was an alter boy? I was, in fact, from 5th grade until 8th grade. John Kerry and I have that in common! we certainly hope so. Quote Link to comment Share on other sites More sharing options...
aparxa Posted October 4, 2007 Report Share Posted October 4, 2007 (edited) An *easy* formula to extract a square root (cover of aparxa from a famous Newton standard) : If you need the sqrt of x (ex 34), take the closer perfect number r^2 of x (36). An approximation of the sqrt of x (34) is the fraction (mean of two numbers)/r = 35/6 If M is this mean (M=35), and b the half difference of the first numbers (b=(36-34)/2=1), then sqrt(x) =approx= M/r and for fans of mental calculation, we can use this second order formula : sqrt(x) =approx= M/r -b^2/(2Mr) =example= 35/6-1/(2*35*6)=2449/420 I also have a FABULOUS formula to calculate inverse numbers, will expose it later. Edited October 4, 2007 by aparxa Quote Link to comment Share on other sites More sharing options...
rostasi Posted October 4, 2007 Report Share Posted October 4, 2007 Is Baire's Theorem far behind? Quote Link to comment Share on other sites More sharing options...
rockefeller center Posted October 4, 2007 Report Share Posted October 4, 2007 I'm a big Mandelbrot fan since 1989 but I've to stick with 8 beers = I feel alright Quote Link to comment Share on other sites More sharing options...
DukeCity Posted October 5, 2007 Report Share Posted October 5, 2007 (edited) Good formula to know: 3,2,2,1 3 parts vodka 2 parts triple sec 2 parts cranberry juice 1 part lime juice = Perfect Cosmopolitan! (edit to mention that formula arrived at after EXTENSIVE research... ) Edited October 5, 2007 by DukeCity Quote Link to comment Share on other sites More sharing options...
The Magnificent Goldberg Posted October 5, 2007 Report Share Posted October 5, 2007 Did I have a formula? I wonder what it was. MG Quote Link to comment Share on other sites More sharing options...
Jazzmoose Posted October 5, 2007 Report Share Posted October 5, 2007 http://www.1728.com/quadratc.htm who of us can ever forget this from 7th grade math? I've had to memorize that damned formula four separate times in life, and I still can't remember the damned thing... Quote Link to comment Share on other sites More sharing options...
Jazzmoose Posted October 5, 2007 Report Share Posted October 5, 2007 I also have a FABULOUS formula to calculate inverse numbers, will expose it later. Good idea...too much too fast could be a problem! Quote Link to comment Share on other sites More sharing options...
aparxa Posted October 5, 2007 Report Share Posted October 5, 2007 I also have a FABULOUS formula to calculate inverse numbers, will expose it later. Good idea...too much too fast could be a problem! 1/49=0.02040816326.... 1/97=0.010309278... etc ... Ain't it beautiful :-? Quote Link to comment Share on other sites More sharing options...
BruceH Posted October 5, 2007 Report Share Posted October 5, 2007 http://www.1728.com/quadratc.htm who of us can ever forget this from 7th grade math? I can. And did. Quote Link to comment Share on other sites More sharing options...
BruceH Posted October 5, 2007 Report Share Posted October 5, 2007 (edited) e to i times pi minus 1 = 0 Edited October 5, 2007 by BruceH Quote Link to comment Share on other sites More sharing options...
The Magnificent Goldberg Posted October 5, 2007 Report Share Posted October 5, 2007 I also have a FABULOUS formula to calculate inverse numbers, will expose it later. Good idea...too much too fast could be a problem! 1/49=0.02040816326.... 1/97=0.010309278... etc ... Ain't it beautiful :-? I've looked at that three times already (once for each posting) and I've only just seen it. Does it really go on like that forever? MG Quote Link to comment Share on other sites More sharing options...
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