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

You are not logged in. #1 20120729 16:25:45
Quadratic EquationHello everyone! Please help me to continue solving this equation: Last edited by 295Ja (20121203 22:41:54) #2 20120729 18:16:59
Re: Quadratic Equationhi 295Ja so I've checked these in the original and both work ok. Hope that helps! Bob You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei #3 20120729 19:15:28
Re: Quadratic EquationBob thank you for helping! I hope you won't mind if I'll visit this forum more often and post problems I'll find confusing in the future. Last edited by 295Ja (20121203 22:44:45) #4 20120729 19:32:08
Re: Quadratic EquationHi 295Ja;
That is the purpose of the forum. It is a place where like minds can freely share information. 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 20120729 19:54:22
Re: Quadratic EquationHi; 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 20120729 20:12:13
Re: Quadratic EquationDo not admire me. I do not require much sleep and am capable of going without any for 36 hours or so. 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 20120729 20:14:38
Re: Quadratic Equationhi 295Ja Student remembers about cross multiplying, but does it incorrectly: It is because of this sort of mistake that teachers advise against using cross multiplication. I prefer to teach 'multiply every term by the same amount', so in the above example: Another thing you may find helpful is to convert the algebra to numbers. In my example, suppose u = 3, v = 6 and f = 2 In the original: This is correct. In the error version: This is NOT CORRECT so the error is revealed. In my correct version: This has come out correctly. This is not a guarantee that no mistake has been made as I might just have been lucky to get the 'right answer', but it will help to confirm that what you have done is right. It is 11.14 am in the UK. Bob You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei #12 20120729 23:25:25
Re: Quadratic EquationHi;
If only someone I knew felt that way. 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. #13 20120729 23:36:39
Re: Quadratic Equationhi bobbym, You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei #14 20120730 00:21:01
Re: Quadratic EquationHi;
A person like that could be described as a wolf or maybe just a darn fool.
That was my feeling about you so you can not borrow it. 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. 