Archive for the ‘Uncategorized’ Category
Tuesday, March 16th, 2010
If you have a Math-related site, especially one that is non-commercial or mostly non-commercial, and you write me a guest article I'll likely publish it here. If you want to plug a great Math-related cause, write it up and submit it as well. If you have a book (or product) ...
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Thursday, January 7th, 2010
I received this email from Intel yesterday and thought many of you would be interested:
Today, as part of President Obama’s “Educate to Innovate” Campaign, Intel joined with the President to honor America’s best math and science teachers and committed $200 million to help improve math and science achievement in the ...
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Wednesday, September 9th, 2009
Today is 9/9/09 and here, in New Mexico, it's almost 9:09pm. In honor of 9/9/09 09:09 I want to bring to your attention an article from today's Wolfram Blog. It has 9 formulas with with lots of 9's in their evaluation. And, it shows the Mathematica formulas for them and ...
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Tuesday, September 1st, 2009
I'm going to take a break from MMM puzzles for some time. I do owe a prize for MMM #38 and I'll give one out shortly. I also will go through the MMM #37 solutions to see if there are other prizes to give out there.
What I'll do for now ...
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Friday, August 14th, 2009
I'm needing to take a couple of weeks of hiatus from the blog. I shall return!
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Monday, August 10th, 2009
Alan provided a very different solution from the others and provided a Matlab program for his solution:
I wrote a solution in MATLAB - I think its only uses standard mathematical functions, but I'll clarify if needed.
inputs/outputs
(x,y): as defined in your post
z: integer value at coordinate (x,y)
intermediate variables:
r0: which square 'ring' ...
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Saturday, July 4th, 2009
I'm giving away three prizes this time. Yes, I did say I would give four prizes but when I reviewed the first two submissions one of them was not correct. Henno Brandsma, editor for the Topology Q+A Board, sent the first correct solution, and that was the only correct solution ...
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Tuesday, June 30th, 2009
MMM #35 turned out to be harder than I thought judging by the small number of submissions I received.
I'll be giving away four prizes on Friday - two to the early submitters, one to .mau. for consistently submitting entries to the contest for a really long time, and one to ...
Posted in Uncategorized | 3 Comments »
Monday, June 29th, 2009
Hi,
I've been playing with this series:
Sn = 1x22 + 2x32 + 3x42 + ... + nx(n+1)2
I've come up with a formula for determining Sn but I derived the formula in a fairly roundabout way.
I'm interested to know if someone has an elegant way to derive the formula.
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Thursday, June 25th, 2009
I've only gotten two solutions to the "Fibonacci Fun" problem I proposed. Is everyone on vacation and not thinking about Math, do people find the problem boring or is it too hard? I don't think it's one of my harder problems. I want to state that I approached the problem ...
Posted in Uncategorized | 5 Comments »
