Comments for The Number Warrior
https://numberwarrior.wordpress.com
Assorted posts on mathematics and education
Wed, 30 Jan 2019 18:05:27 +0000
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Comment on Q*Bert Teaches the Binomial Theorem by Jason Dyer
https://numberwarrior.wordpress.com/2010/05/23/qbert-teaches-the-binomial-theorem/#comment-20533
Wed, 30 Jan 2019 18:05:27 +0000http://numberwarrior.wordpress.com/?p=1567#comment-20533Thanks!
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Comment on Q*Bert Teaches the Binomial Theorem by Evan D Rushton (@E_Rushton)
https://numberwarrior.wordpress.com/2010/05/23/qbert-teaches-the-binomial-theorem/#comment-20532
Wed, 30 Jan 2019 06:46:28 +0000http://numberwarrior.wordpress.com/?p=1567#comment-20532We are a month into 2019 and Q*Bert teaches the Binomial Theorem is still gold. #binomialTheorem
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Comment on My Favorite Math Magic Trick (as a puzzle) by Anonymous
https://numberwarrior.wordpress.com/2008/11/15/my-favorite-math-magic-trick-as-a-puzzle/#comment-20499
Tue, 15 Jan 2019 16:19:54 +0000http://numberwarrior.wordpress.com/?p=175#comment-20499I dont get it, isnt most of the trick just remembering the numbers and saying which one is missing?
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Comment on The Alternate Form of the Quadratic Formula by enricouva
https://numberwarrior.wordpress.com/2009/05/24/the-alternate-form-of-the-quadratic-formula/#comment-20140
Sat, 24 Nov 2018 11:16:43 +0000http://numberwarrior.wordpress.com/?p=674#comment-20140This form of the quadratic is very useful when b^2>>4ac. Otherwise the conventional quad formula will incorrectly yield a solution of x= 0 on most calculators

Both forms of the quadratic can be derived from solving for the two roots in
x^2 + b/a x + c/a= (x-r1)(x-r2), given that (r1- r2)^2=(r1+r2)^2-4r1r2 and that c/a= r1r2 and b/a= -(r1+r2)

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Comment on Is “one, two, many” a myth? by 'The Impact of Transition. In numbers' - a note of caution - Dark Optimism
https://numberwarrior.wordpress.com/2010/07/30/is-one-two-many-a-myth/#comment-18046
Sun, 22 Jul 2018 15:49:25 +0000http://numberwarrior.wordpress.com/?p=1726#comment-18046[…] have long found it fascinating that there are cultures do not have words for numbers other than "one", "two" and "many&qu…. I fondly imagine that if Transition had its own language it might add one more: […]
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Comment on On the Ancient Egyptian Value for Pi by Finding the Area of a Circle – The Math Doctors
https://numberwarrior.wordpress.com/2008/03/05/on-the-egyptian-value-for-pi/#comment-17986
Mon, 18 Jun 2018 12:01:30 +0000http://numberwarrior.wordpress.com/?p=49#comment-17986[…] an ancient Egyptian method that comes a little closer to being a formula, which I find described here and here, taken from the Rhind papyrus. (We had answered a question about it here.) As a formula, […]
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Comment on Greek Alphabet Chart by katelikestocreate
https://numberwarrior.wordpress.com/2009/01/13/greek-alphabet-chart/#comment-17975
Tue, 12 Jun 2018 01:11:08 +0000http://numberwarrior.wordpress.com/?p=252#comment-17975Thank you! This is perfect!
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Comment on Early Roman Numerals by Anonymous
https://numberwarrior.wordpress.com/2009/04/17/early-roman-numerals/#comment-17952
Sun, 01 Apr 2018 19:42:57 +0000http://numberwarrior.wordpress.com/?p=522#comment-17952how do you know that?
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Comment on On the Ancient Babylonian Value for Pi by anonymous1
https://numberwarrior.wordpress.com/2008/12/03/on-the-ancient-babylonian-value-for-pi/#comment-17933
Thu, 22 Mar 2018 18:58:11 +0000http://numberwarrior.wordpress.com/?p=191#comment-17933so basically everything in this article is pure assumption … we , don’t know what was their “Pi” … you just assumed that 3= circumference and we just assume that 25/24 is depicting the perimeters .. the truth is , we have no idea what they were trying to calculate …
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Comment on Three creative ways to use TI-Navigator by Jeffry Nothstine
https://numberwarrior.wordpress.com/2010/05/05/three-creative-ways-to-use-ti-navigator/#comment-17929
Sat, 17 Mar 2018 12:28:01 +0000http://numberwarrior.wordpress.com/?p=1511#comment-17929PAs mal ! Je vais m’en reservir pour mon propre blog.
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