math solution

Let's Learn Permutation
Permutations
BY THE PERMUTATIONS of the letters abc we mean all of their possible arrangements:
abc, acb, bac, bca, cab,cba
There are 6 permutations of three different things. As the number of things (letters) increases, their permutations grow astronomically. For example, if twelve different things are permuted, then the number of their permutations is 479,001,600.
Now, this enormous number was not found by counting them. It is derived theoretically from the Fundamental Principle of Counting:
If something can be chosen, or can happen, or be done, in m different ways, and, after that has happened, something else can be chosen in n different ways, then the number of ways of choosing both of them is m· n.
For example, imagine putting the letters a, b, c, d into a hat, and then drawing two of them in succession. We can draw the first in 4 different ways: either a or b or c or d. After that has happened, there are 3 ways to choose the second. That is, to each of those 4 ways there correspond 3. Therefore, there are 4· 3 or 12 possible ways to choose two letters from four. ab , ba, ca, da, ac, bc, cb, db, ad, bd, cd , dc
ab means that a was chosen first and b second; ba means that b was chosen first and a second; and so on.
Posted by sahmozac at 9:18 PM 1 comments

Suggestions for Preparing for and Taking Math Tests

1. Keep a list of things to remember - problems stressed by the instructor, definitions, terms, diagrams and graphs, formulas.
Keep up with the work - some courses can be passed by cramming, but math isn’t one of them. Skills in math, as in sports, must be practiced.
2. Study copies of old exams, chapter tests from the book, or make up your own. Then practice them with the same limits as the real exam.
Get a good night’s sleep before the test so that you are rested and alert; a quick review before the test should be a summary only.
Arrive at the test early so that you can be relaxed when the exam begins.
3. Quickly look over the test and budget your time - don’t spend too much time on any single problem or section of the test.
Do some work on each problem - try to work at least part of each problem because partial credit is better than none.
4. Check your answers and look for careless mistakes during the last few minutes of your test time (budget this important time).

Posted by sahmozac at 9:18 PM 0 comments
HOW TO STUDY MATHS
Math Study Skills

1.
Read what the instructor will be lecturing on before you go to class.Read slowly. Reading mathematics is not like reading a novel or even history. Speed reading techniques are not appropriate. Every word and symbol is important to the meaning. Do not skip the symbolic part of the text. This is often the most important part. If you do not understand a symbol, look in the glossary or in the earlier part of the text. Symbols are often explained when they are first introduced. If you still can not find out what a symbol means, ASK!Read with a pencil in hand. Every time the author does a problem, do it on your own—either before or after you read his or her explanation. This makes sure you know what steps have been shown and, more importantly, which ones were omitted. If there is something you do not understand, try to formulate a question about it. Often if you can ask a specific question, you can answer it yourself. If you can’t answer it, you know what part of the instructor’s lecture requires your complete attention. Your question is ready if the lecture does not clear up your misunderstanding.
2.
Understand the concepts.Don’t be satisfied with vague ideas about how to work problems. Do the examples yourself, understand the concept illustrated, then try making up your own examples. Keep in mind that the questions on the exam may be very different from the example in the book.
3.
Practice.Be sure you understand the concepts before you practice. Then practice will help you remember and give you confidence in your mastery. Force yourself to remember the methods as you work problems; don’t look back in the book.
4.
Keep up with assignments (whether they are graded or not).The pace is much faster in college and keeping up to date with assignments helps you to better understand what is going on in class.Mathematics is not a spectator sport. The only way you can learn mathematics is by doing it. Following are some suggestions for getting the most out of the time you spend on homework.
Understand the purpose of homework. Homework in mathematics classes is assigned to help you understand certain concepts and to help you build certain skills. Homework is not assigned to you because it is important to get the right answers. Your instructor already knows the answers.
Try to understand the process, not the specific problem. Classify problems in the assignment by problem type. Although this is often done for you by the directions, it is not always. Do each assigned problem and then check it in the back of the book. Try to figure out why you missed the ones you did instead of just working toward the answer. A similar problem may be on a test or quiz.
Mark homework problems you still do not understand and get help with them before the next class. The next lecture may build on a concept or skill you did not understand in the homework. When you do get help, make notes on what you learned, so that you can study them for the test.
Before closing the book, look back over the assignment and try to explain to yourself what the assignment was about, what each kind of problem was asking, how you got the answers and what the answers tell you. This process will help you understand the material and will help you discover what you don’t understand.
Keep your homework in a convenient and neat notebook so that you will be able to find questions or difficulties you have quickly and easily. This will also provide an invaluable study guide for tests.
5.
Ask questions.Do not hesitate to ask questions. Ask your instructor for help after you have tried to pull class notes and textbook explanations together for review and still don’t understand. Write down specific problems so you have them ready; don’t be vague and say you just don’t understand.
6.
Don’t hesitate.Get help right away. Tutoring and help sessions are available. The longer you wait before getting help, the harder it will be to get caught up. Most of the time when you feel lost, it is just one concept that you are missing, so get help quickly. One missed concept in a math class will make the rest of your math career a hardship. Don’t feel embarrassed to ask questions and get help; even the best mathematicians have felt completely lost at some point.

DAEMON TOOLS PRO ADVANCED

Info:

	Code: DAEMON Tools Pro is CD & DVD emulation software which allows users to make CD/DVD disc images, create a virtual CD / DVD drives and play CDs & DVDs without the need for the physical disc. DAEMON Tools Pro enables you to create up to 32 virtual drives, allowing you to run your game images at over hundreds times faster than from a conventional CD-ROM. DAEMON Tools Pro supports more PC games than any other CD emulator! It is able to emulate nearly all PC games on the market today. Your original games/program discs can be safely stored away; DAEMON Tools Pro Images mean that you always have your expensive media stored safely on your Hard Drive for instant retrieval at the click of a button. No more searching for the correct game disc or software application install disc, everything is at your finger tips. DAEMON Tools Pro enables you simultaneously play your favorite game and bring up your route planner written on another CD-ROM, without having to eject and reload any physical discs. The 32 virtual drives ability of DAEMON Tools Pro means you can have the equivalent of 32 CD-ROM Drives in your Home PC all accessible simply and quickly running your Disc image at hundreds times faster than that of a conventional CD-ROM drive. If you need a program or CD it is immediately there - always ready to use! At the office: Program discs and many other applications generally require the original Disc to be in the computers CD-ROM drive, this restricts the amount of people in your office who can have access to the same software at the same time without the cost of additional discs, DAEMON Tools Pro virtual drives resolves that problem for you. No more hunting around the offices for that elusive disc you need to run your application, every thing you require is just a click.

	Code: http://rapidshare.com/files/169821741/Daemon4102180-DJ24966.rar