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

You are not logged in. #1 20121026 19:52:29
Complex numberHow do I find the cube root of a+bi.I know how to find square root of a+bi,I want to know about cube root. #2 20121026 20:32:38
Re: Complex numberHi; 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. #4 20121026 20:59:39
Re: Complex numberHi; You might want to try these videos to see another way but it is tedious too. http://www.youtube.com/watch?v=abzAZIpxuY http://www.youtube.com/watch?v=xPn8pHCZL18 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. #6 20121027 05:08:45
Re: Complex numberModulus argument form continued: So that worked. I also checked it with the other two non repeating values for theta. (The three roots are symmetrically placed around the origin, 2pi/3 rads apart.) They worked too. Bob You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei #7 20121027 13:51:16
Re: Complex numberHi! 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. 