Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ ¹ ² ³ °
 

You are not logged in. #2 20121122 19:50:58
Re: real rootsHi; Substitute two endpoints of of ∞ and ∞ into x. You will get the 7 x 2 matrix Count the number of sign changes in the first column and subtract the number of sign changes in the second column. 3  3 = 0 There are no real roots! In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #3 20121122 19:53:32
Re: real rootshi jacks, You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei #4 20121122 20:07:56
Re: real roots
How did you get that? With Cauchy's bound I am getting it in [7,7]... since where c is a root. #6 20121122 20:18:55
Re: real rootsHi; In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #8 20121125 14:39:56
Re: real rootsHi jacks; In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #9 20121125 15:52:17
Re: real rootsHi! Writing "pretty" math (two dimensional) is easier to read and grasp than LaTex (one dimensional). LaTex is like painting on many strips of paper and then stacking them to see what picture they make. 