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

You are not logged in. #1 20130109 07:09:27
Scientia’s exercises#1. Rating: Easy #2 20130109 09:27:57
Re: Scientia’s exercises
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. #3 20130109 10:05:33
Re: Scientia’s exercises
"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do."  Ted Nelson #4 20130109 10:28:46
Re: Scientia’s exercises#2. Rating: Medium Do there exist integers n such that 3^{n}+7^{n} is a perfect square? Last edited by scientia (20130109 10:29:46) #5 20130109 10:57:13
Re: Scientia’s exercisesHi scientia, "The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do."  Ted Nelson #6 20130109 11:25:52
Re: Scientia’s exercisesHi scientia 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 #7 20130109 16:09:35
Re: Scientia’s exercisesHi; 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 20130109 21:53:40
Re: Scientia’s exercisesanonimnystefy and bobbym: Last edited by scientia (20130109 22:07:47) #9 20130109 22:20:48
Re: Scientia’s exercisesHi scientia 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 #10 20130110 02:01:07
#11 20130110 02:01:48
Re: Scientia’s exercisesHi scientia 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 #12 20130110 03:59:01
Re: Scientia’s exercisesHi; 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 20130110 05:00:26
Re: Scientia’s exercises#4. Rating: Difficult x and y are real numbers satisfying Find the maximum and minimum values of . #14 20130110 05:36:38
Re: Scientia’s exercisesHi scientia; 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. #15 20130110 06:16:06
#16 20130110 06:50:37
Re: Scientia’s exercisesHi; 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. #17 20130111 22:48:26
Re: Scientia’s exercises#5. Rating: Easy Let A and B be finite sets with m and n elements respectively, and suppose ƒ:A→B is a mapping. If ƒ is injective (onetoone), show that m ≤ n. #18 20130114 22:58:57
Re: Scientia’s exercises#6. Rating: Medium #19 20130124 01:21:32
Re: Scientia’s exercisesHi scientia Last edited by anonimnystefy (20130124 01:22:17) 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 #20 20130125 22:52:16
Re: Scientia’s exercises
Last edited by Ivar Sand (20130126 01:00:55) I majored in Physics in 1976. Also, I studied mathematics and computer science. I work as a computer programmer. I am from Norway. 