Transformations of numbers - some of the most important operations in mathematics. For the solution of any given task to us can be required to present number in the necessary form. And the list of tasks is almost not limited - it can be both a physical task, and any equation.
It is required to you
- Calculator, tabular Excel processor
Instruction
1. At first you need to understand in what form you have to present number. Usually it is obvious to be told about it in a task. If it it is held back, it is necessary to proceed from own convenience. So, the tasks concerning profit or increase in something are closely connected with percent. Therefore also from them it is the best of all to represent numbers in a percentage format. It is the best of all to represent big numbers in an exponential form.
2. For the solution of the various equations, especially trigonometrical, it is possible to use successfully representation of number in a trigonometrical form. For this purpose it is necessary to use the main trigonometrical identity: ""The sum of squares of a sine and cosine of any corner is equal to unit"".
3. For record of number in a percentage format, it is necessary to understand, it is a part of what. Generally we can transform number to a percentage format as follows: we divide smaller number into bigger and we multiply by 100 percent.
4. It is simple to transform number to an exponential look too. It is a convenient format for record very big (and very small) sizes, it is very often used in physics and computer science. Its general view: a*10^b where an is number, on the module bigger units, but smaller dozens, b is degree dozens. For record of number in an exponential form it is necessary to break number into two multipliers - number and unit. Further, if number big, then it is necessary to divide it into 10 (and to multiply unit by 10). So we will do until we receive in the first multiplier of the number having before a comma only the category of units. Then we write down number a, letter E and degree in which it is necessary to build 10 to receive the second multiplier (unit several times increased by 10).