Comments on: Most elementray aha! moments http://www.mathteacherctk.com/blog/2010/06/most-elementray-aha-moments/ Thoughts on math education and related tidbits Fri, 20 Jan 2012 11:38:59 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: A beautiful mathematical equality « Chaitanya's Random Pages http://www.mathteacherctk.com/blog/2010/06/most-elementray-aha-moments/comment-page-1/#comment-1947 A beautiful mathematical equality « Chaitanya's Random Pages Thu, 22 Jul 2010 10:31:44 +0000 http://www.mathteacherctk.com/blog/?p=382#comment-1947 [...] A beautiful mathematical equality July 22, 2010 — ckrao Here is an equality worth sharing, found at the CTK Insights blog here. [...] [...] A beautiful mathematical equality July 22, 2010 — ckrao Here is an equality worth sharing, found at the CTK Insights blog here. [...]

]]> By: Radical Simplification | CTK Insights http://www.mathteacherctk.com/blog/2010/06/most-elementray-aha-moments/comment-page-1/#comment-1942 Radical Simplification | CTK Insights Mon, 19 Jul 2010 16:33:13 +0000 http://www.mathteacherctk.com/blog/?p=382#comment-1942 [...] a related post I have shown that Without resorting to this proof, I am going to show [...] [...] a related post I have shown that Without resorting to this proof, I am going to show [...]

]]> By: admin http://www.mathteacherctk.com/blog/2010/06/most-elementray-aha-moments/comment-page-1/#comment-1928 admin Wed, 14 Jul 2010 18:18:23 +0000 http://www.mathteacherctk.com/blog/?p=382#comment-1928 Here is in fact the same problem. Unless there is a reasonable definition of .999... there is no reason to assume that 10×.999... = 9.999... Assume x = 1 + Δ. Then 10x = 10 + 10Δ Subtracting gives 9x = 9 + 9Δ, or x = 1 + Δ, which is nothing new. Here is in fact the same problem. Unless there is a reasonable definition of .999... there is no reason to assume that 10×.999... = 9.999...

Assume x = 1 + Δ. Then

10x = 10 + 10Δ

Subtracting gives

9x = 9 + 9Δ, or

x = 1 + Δ,

which is nothing new.

]]>