David Coffey sur Twitter : "Via @nprnews: They're No. 1: U.S. Wins Math Olympiad For First Time In 21 Years #MathChat. They're No. 1: U.S. Wins Math Olympiad For First Time In 21 Years. Head coach Po-Shen Loh (far left) and assistant coaches John Berman and Alex Zhai (far right) flank the members of the winning squad: Shyam Narayanan, David Stoner, Michael Kural, Ryan Alweiss, Yang Liu and Allen Liu.
Courtesy of Po-Shen Loh hide caption itoggle caption Courtesy of Po-Shen Loh Head coach Po-Shen Loh (far left) and assistant coaches John Berman and Alex Zhai (far right) flank the members of the winning squad: Shyam Narayanan, David Stoner, Michael Kural, Ryan Alweiss, Yang Liu and Allen Liu. Courtesy of Po-Shen Loh In one of this year's most intense international competitions, the United States has come out as best in the world — and this time, we're not talking about soccer. This week, the top-ranked math students from high schools around the country went head-to-head with competitors from more than 100 countries at the International Mathematical Olympiad in Chiang Mai, Thailand. "If you can even solve one question," Loh tells NPR's Arun Rath, "you're a bit of a genius.
" 12 Useful Math Hacks That They Didn't Teach You In School. 12 Useful Math Hacks That They Didn't Teach You In... 12 Useful Math Hacks That They Didn't Teach You In School By Virgin Radio Lebanon Life DIY L.Glee for Virgin Radio Lebanon After finding these math hacks, I'm convinced that all those years of being forced to struggle through math class really was just a torture ploy created by evil math teachers everywhere. 1.
As if it was this simple all along... via reddit/u/quaxon 2. Who knew? Via imgur / MoonnMan 3. Finally! Via WonderHowTo 4. Also a cool party trick. via 1000lifehacks What Did You Think? L.Glee For Virgin Radio Lebanon Getting information off the Internet is like taking a drink from a fire hydrant - Mitchell Kapor More posts by L.Glee Verified Join Diply Today Connect with a social network Sign In to Diply Sign into your Diply account with your social network Report Post Select the option(s) that best described why this should be removed from Diply.
Angle-a-trons. Doodling in Math: Spirals, Fibonacci, and Being a Plant [Part 3 of 3] The origin of the "nabla" symbol - Casting Out Nines. We’re about to start working with gradient vectors in Calculus 3, and this topic uses a curious mathematical symbol: the nabla, which looks like: .
This symbol has several mathematical uses, one of which is for gradients; if f is a function of two or more variables then \nabla f is its gradient. But there does not appear to be a use for the symbol outside mathematics (and mathematical physics). One of my students asked me about the origin of this symbol, and I had to confess I didn’t know. I always figured it was somehow related to the much more common capital Greek delta, \Delta , but the real story is a lot more colorful than that. The nabla is so-called because it looks like a harp; the Greek word for the Hebrew or Egyptian form of a harp is “nabla” .
(The above quote is from this text file that contains a lot more on this subject.) I like that term “atled” — that’s the backwards spelling of “delta” of course. Exercise Dashboard.