It is easy to find a number root. It is enough to have near at hand the calculator, the mobile phone or the computer. But also there are nuances.
Instruction
1. It is the simplest to find a number root if the calculator is had near at hand. It is desirable engineering – such in which there is a button with the sign of a root: "√". Usually for extraction of a root it is enough to gather number, and then to press the button: "√". In the majority of modern mobile phones the calculator appendix with function of extraction of a root is had. The order of finding of a root of number by means of the telephone calculator is similar to the above. Example. To find a root square of 2. We turn on the calculator (if it is switched off) and consistently we press the buttons with the image of the two and square root ("2" "√"). It is not necessary to press the = key, as a rule. As a result we receive number of 1.4142 type (the number of signs and "roundness" depends on word length and settings of the calculator). Note: in attempt to find a root of a negative number the calculator usually gives the error message.
2. If there is an access to the computer, then it is very simple to find a number root. 1. It is possible to use the Calculator application, available practically on any computer. For Windows HR this program can be started as follows: "Start-up" - "All programs" - "Standard" - "Calculator". The look is better to establish "usual". By the way, unlike the real calculator the button for extraction of a root is marked as "sqrt", but not "√". If it is not possible to reach the calculator by the specified way, then it is possible to start the standard calculator "manually": - "to Execute" "start-up" - "calc".2. For finding of a root of number it is also possible to use some programs installed on the computer. Besides, many programs have own built-in calculator. For example, for the Excel MS application it is possible to do the following sequence of actions: We start Excel MS. We write down number from which it is necessary to take a root in any cage. We place the index of a cage on another mestonazhimay a button of the choice of function (fx) we Choose the ROOT function we specify a cage as an argument of function with chislomnazhimay "OK" or "Enter" Advantage of this way is what now it is enough to enter into a cage with number any value as in a cage with function the answer immediately appears. Note. There is several another, more exotic a way to find a number root. For example, "corner", by means of a slide rule or Bradis's tables. However, in this article these methods are not considered in view of their complexity and practical uselessness.