johndcook.com > blog
Elementary symmetric polynomials and optimization
5+ hour, 46+ min ago —...You can use Lagrange multipliers to show that the solution is... ...Cook. is the sum of all terms containing a product of m variables...
johndcook.com > blog
Weighting an average to minimize variance
7+ hour, 39+ min ago —...Suppose you have $100 to invest in two independent assets, A and ... ...Let X and Y be two independent random variables with finite variance...
scientificamerican.com > article
How to Identify a Prime Number without a Computer
15+ hour, 25+ min ago —...In the 1800s French mathematician Édouard Lucas spent years proving... ...His method is still used 150 years later By Manon Bischoff edited... ...Manon Bischoff is a theoretical physicist and an editor at Spektrum... ...This was only achieved by mathematician Derrick Henry Lehmer in 1930...
newscientist.com > article
The biggest controversy in maths could be settled by a computer
1+ day, 16+ hour ago —...and the Research Institute for Mathematical Sciences in Kyoto, where... ...at Imperial College London.... ...himself could still fight over its meaning, says Commelin.... ...project that ultimately might turn out to be a failure,” says Buzzard...
yahoo.com > news > articles
Adrian special education teacher makes powerful findings in hands-on learning
1+ day, 5+ hour ago —...Adrian Public Schools is recognizing special education teacher Natasha... ...The study, co-authored with Vanessa Morrison and Andrea Milner of...
onlinemath4all.com
Algebra Word Problems Worksheet with Answers
1+ day, 21+ hour ago —...Find the present age of Liam.... ...In triangle ABC, the average of m∠A and m∠B is 75°. Find m∠C.... ...Age of Liam 9 years ago = x - 9 Age of Liam 4 years hence = x + 4... ...Let x be the present age of Liam....
mitchellrepublic.com > news > south-dakota
Math educators push state board to keep current standards in place
1+ day, 17+ hour ago —...Sharon Vestal, a math professor at South Dakota State University... ...South Dakota Secretary of Education Joe Graves said the proposal... ...Graves added that South Dakota students “lack significant progress... ...Department officials presented South Dakota’s latest report card...
johndcook.com > blog
Brownian motion and Riemann zeta
2+ day, 1+ hour ago —...motion and Riemann zeta first appeared on John D.... ...The post Brownian motion and Riemann zeta first appeared on John...
wunc.org
British mathematician John Hogan explains his research on the 'golfer's curse"
4+ day, 11+ hour ago —...SIMON: John Hogan.... ...(SOUNDBITE OF GOLF CLUB HITTING GOLF BALL) JOHN HOGAN: Glad to be...
scientificamerican.com > article
Scientists See ‘Eureka’ Moments in Mathematicians’ Chalkboard Writings
2+ day, 16+ hour ago —...Georgetown University psychologist Shadab Tabatabaeian, the paper... ...Matthew Hutson is a freelance science writer based in New York City...