Computers use binary numbers internally, because components that use binary are easier and cheaper to build. Whenever you type a number into the computer, it gets converted to binary internally, and then back to decimal for output. (Actually, it's converted to ASCII for output, but that's for a later discussion.) www.geocities.com
Sunday, December 25, 2011
Saturday, December 17, 2011
Thursday, December 8, 2011
(Algebra 1) Conversion to Scientific Notation - Questions #5-6
www.acleaders.com (Full Algebra 1 online course) Converting numbers from standard to scientific notation.
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Saturday, December 3, 2011
algebra
this is how to solve algebra question this has brackets and many other ticks this question and tut will show you most about algebra facebook page just started www.facebook.com
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Wednesday, November 30, 2011
How to apprehend PDF's on an iPad
bit.ly - How to move PDF's from your computer onto the iPad. To view eBooks, Comic Books and Newspapers on the iPad, check out bit.ly
Sunday, November 27, 2011
Casio CFX-9850GC Plus Graphing Calculator (White)
!±8±Casio CFX-9850GC Plus Graphing Calculator (White)
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Post Date : Nov 27, 2011 06:28:38
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For students in any field, but especially math and sciences, the Casio CFX-9850GC PLUS graphing calculator is a problem-solving tool with over 900 features for storing, graphing, and analysis. You can execute evaluation tables on a split screen (which allows you to trace the graph and scroll table values simultaneously) to display graphs and tables. With a long list of features, you can master list-based, one- and two-variable statistical calculations, a variety of regressions, statistics, hypothesis testing, and advanced financial calculations.
Thursday, November 24, 2011
Wednesday, November 23, 2011
HP 32Sii Scientific Calculator
!±8± HP 32Sii Scientific Calculator
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HP 32S II 32SII RPN Scientific Calculator
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Tuesday, November 22, 2011
Convert Large Numbers in a Smaller One Using Scientific Notation Calculator
Scientific notation is a style of writing or representing numbers that pamper values that are too large or too small to be conveniently written in standard decimal notation. It has large number of useful properties and is mostly used in calculators and by mathematicians, doctors, engineers, and scientists.
Do you remember how we represent speed of light? Speed of light is given as 300,000,000 m/sec and we write it in scientific notation as 3 *108 m/sec. Scientific notation are developed by scientists to write the large values in small form. Scientific notation is based on powers of the base number 10.
The first number 3 is called as the coefficient and value of coefficient must be greater than or equal to 1 and less than 10. The second value is called as the base and it must be 10 when we deal with scientific notation. We always write the base number 10 in exponent form. In the case of speed of light, the number 3 * 108, the 8 is referred as the exponent or power of 10. When we use scientific nations then it makes complex calculation easy. Do you know that a Scientific Notation Calculator is developed to help students in solving the scientific problems. When you use this calculator you will easily convert the large number in smaller form. You will definitely enjoy solving scientific notation using this calculator.
After this let's study another math topic, statistics. It is the study of the collection, organization, analysis, and interpretation of data. It deals with all aspects of this, including the planning of data collection in terms of the design of surveys and experiments. In many articles I have explained you about online math help that you can use to solve math problems. Similarly, you can also solve your statistics problems with online statistics help.
To understand statistics in efficient way we need to understand few terms which we will use frequently in solving statistics problems. The very first term is "average". We all are intimated with this word from early age. In this, we add all the quantities and divide it by its number. Statistically average means Mean. Other term is Median; it is the "middle value" in given list. When the number of items present in the list is odd then median is the middle entry after sorting the list in increasing order. When the numbers are even then Median is equal to the sum of middle two entries divided by two. The last one is "Mode", it is defined as item or number that is occurring most frequently in the list. It is important to note that in a list there can be more then one mode, as more than one number can occur frequently. Sometimes we will ask to find the "range", it is simply the difference between the largest number and the smallest number of the list.
Linear inequalities is the inequality that contains linear function. We get an inequality equation when two numbers are connected by greater than or less than symbol. linear inequality is given as f(x) < b or f(x)
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Higher adjustment assemblage conversions
This video will demonstrate how to do unit conversions on a higher order non-linear term. For example, how many square meters are in square feet, or how many cubic inches are in 12 cubic yards.
Monday, November 21, 2011
Using a Scientific Calculator In Mathematics Exams
With exams approaching this is a short article with reminders and advice for anyone about to take a mathematics exam and who will need to use a scientific calculator.The most common calculator problems are:
- setting up the calculator in the right mode
- not being able to find the calculator manual!
- remembering to change calculator modes
- rounding and inaccurate answers
Why Use a Scientific Calculator?
Scientific calculators all use the same order for carrying out mathematical operations. This order is not necessarily the same as just reading a calculation from left to right. The rules for carrying out mathematical calculations specify the priority and so the order in which a calculation should be done - scientific calculators follow the same order. This order is sometimes abbreviated by terms such as BODMAS and BIDMAS to help students remember the order of doing calculations.
1st. Brackets (all calculations within a bracket are done first)
2nd. Operations (eg squaring, cubing, square rooting, sin, cos, tan )
3rd. Division and Multiplication
4th. Addition and Subtraction
Being aware of this order is necessary in order to use a scientific calculator properly. This order should always be used in all mathematical calculations whether using a calculator or not.
Scientific Calculator Check
There are two types of scientific calculator, the most recent type being algebraic scientific calculators. Algebraic scientific calculators allow users to type in calculations in the order in which they have been written down. Older scientific calculators need users to press the mathematical operation key after they have entered the number.
For example to find the square root of nine (with an answer of three) press: [button]
Algebraic scientific calculator: [SQUARE ROOT] [9] [=]
Non algebraic scientific calculator: [9] [SQUARE ROOT] [=]
Both these types of scientific calculator are fine for exams, but make sure you know how to use your own type.
If you are not sure whether you have a scientific calculator or not, type in:
[4] [+] [3] [x] [2] [=]
If you get an answer of 14, then you have a left to right non-scientific calculator.
If you get an answer of 10, then you have a scientific calculator as it has worked out the multiplication part first.
Lost Calculator Manuals
Calculator manuals tend to get lost very easily or you can never find them as an exam is approaching. A frequent request is what can you do if you have lost your calculator's manual? If it is a relatively new model then you can download a copy from the manufacturer's web site. If it is an old Sharp or old Casio calculator manual then you can still find these on the internet. Even with search engines, finding these manuals can take some time - the following link has information about new and old calculator manuals for Casio, Sharp, Hewlett-Packard and Texas Instruments: here.
Calculator Mode
Now that you have your calculator manual you can set your calculator to the correct settings. The standard settings are usually:
COMPUTATIONAL:
(use MODE button - choose normal not stat) NOT: SD or REG
DEGREES:
(use MODE or DRG button) NOT: RAD OR GRAD
NORMAL:
(use MODE or SETUP and arrow keys) NOT: FIX, SCI, ENG
Many calculators have a reset button on the back that can be pressed in using a pen or paper clip if you want the original factory settings.
The most common mistake is to leave your calculator in a previous mode and FORGETTING TO CHANGE IT BACK AGAIN ! (We've all done it, just try to avoid doing it in the exam !)
Common Calculator Mistakes
(a) Pressing the DRG button by mistake and not doing trigonometry questions in DEGREES mode. (If you are doing more advanced work then forgetting to change out of DEGREES mode !).
(b) Borrowing an unfamiliar calculator or getting a new calculator too close to the exam and not being familiar with the keys and how to change modes.
(c) Forgetting to write down and check work. Any exam with a calculator should have a warning on it! It is essential to write down the calculations that you're doing so that you can get method marks. You should also try and double check all calculations in case of pressing a wrong button.
(d) Rounding before the end of a calculation. Store calculations in the memory and use all the decimal places during calculations. If you use a rounded value too soon then you will lose accuracy.
(e) Forgetting to use brackets on division calculations (e.g. when dividing by ALL the bottom part of fraction).
Many calculators are now very powerful and have amazing computational power. Some of the programmable calculators are mini computers. Although they will all calculate 100% accurately every time, unfortunately they are only as good and as accurate as their operator!
It is often the case that candidates perform better without a calculator as it is very easy to make simple mistakes when using one. If you can do so, it certainly helps to have an idea of the rough size of the answer, so that you can see if an answer is sensible or not. It is also a good idea to repeat all calculations just in case you have made a key press error.
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