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

You are not logged in. #1 20130212 03:51:29
Hello!Hello,I am a new user.I am a curious boy,if I see something new I try to learn about it.I intend to learn and help about math from this forum,thank you for your time.May all your lives' second differential be negative. There are 10 kinds of people in the world,people who understand binary and people who don't. #2 20130212 03:54:42
Re: Hello!Hi {7/3}; 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 20130212 06:10:04
Re: Hello!hi {7/3}
Are you sure? I think that means it's all down hill from here. Last edited by bob bundy (20130306 08:05:10) You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei #4 20130212 06:16:19
Re: Hello!Hi {7/3} The limit operator is just an excuse for doing something you know you can't. “It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman “Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment #5 20130212 12:23:40
Re: Hello!I meant,if first derivative is 0 and second derivative is ve the point is local mamimum.Also if 2nd derivative is ve for any x,y and z between them,(z,f(z)) is over the secant line of (x,f(x)) and (y,f(y)). There are 10 kinds of people in the world,people who understand binary and people who don't. #6 20130212 19:07:49
Re: Hello!hi {7/3} You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei 