The square root from number X is a number which square is equal to X. Respectively, to calculate a square root from number in degree, it is necessary to build at first number in degree, that is to receive result of multiplication of number on itself necessary number of times. Further process of calculation of a root of the received result begins.
Instruction
1. Of course, the table of squares of numbers from 0 to 20 needs to be known how the multiplication table. Therefore, values of square roots for these numbers will also be known. The easiest way of arithmetic calculation of a square root can be considered a method of consecutive subtraction of odd numbers from the set number one after another.
2. You make this action until the rest does not become equal to zero or there will be no less subtrahend. Count the number of actions, define the whole part of a square root. For example: 16 − 1 = 1515 − 3 = 1212 − 5 = 77 - 7 = 0 All 4 operations are performed, the square root of number 16 is equal to 4. However this method is not applicable to numbers where the taken root is not an integer. Though it is suitable for the children of younger school age solving the simplest mathematical problems.
3. Also the root of number can be calculated by means of the calculator if on it there is the corresponding function. Just gather number, and then press the button with the image of the root badge. In the same way the root by means of the mobile phone is calculated.
4. For finding of a root it is possible to use also the computer. The Calculator application is practically on any computer. The only thing that should be remembered that in the application the button for extraction of a root is designated by sqrt symbols. For extraction of a root it is possible to use also the Excel MS application. In any cage of the field gather the set number, you will leave a cage, press the fx button of the choice of function and specify "ROOT" the name of function, then specify the necessary cage with number and press "OK". Now the square root will be taken from any number in this cage.
5. More difficult methods also are applied to calculation of a root. For example, calculation by means of a slide rule or Bradis's tables. However with development of technologies the need for them disappears.