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

You are not logged in. Pages: 1 #1 20121103 01:24:31
Line segments within circles  terminology and proper algebraHello. I have a question about the proper terminology and algebraic communication involved in line segments within circles. I am okay at mathematics but I have never had any training on WRITING math. #2 20121103 03:20:40
Re: Line segments within circles  terminology and proper algebrahi Reuel, where (a,b) is the centre, and r the radius. For the line to go through the centre you need to test if (a,b) is on the line. If the endpoints are (x1,y1) and (x2,y2), you could test the gradient: If you do a search for 'uniform curve' you'll find lots of curves that are not circles. So I wouldn't describe a circle this way. Convex hull ? Have a look at http://en.wikipedia.org/wiki/Convex_hull Similarly for convex combination http://en.wikipedia.org/wiki/Convex_combination Bob You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei #3 20121103 03:28:26
Re: Line segments within circles  terminology and proper algebraUniform curve as a circle? Most likely not. I have discovered a truly marvellous signature, which this margin is too narrow to contain. Fermat Give me a lever long enough and a fulcrum on which to place it, and I shall move the world. Archimedes Young man, in mathematics you don't understand things. You just get used to them.  Neumann Pages: 1 