How to calculate the root in Excel?

Microsoft Excel has a rich set of various functions. With its help, you can make many different mathematical calculations. However, if the principle of working with the simplest actions is clear to the majority, then not everyone knows how to calculate the root in Excel.

Root function

There are several ways to calculate the square root in Excel, and the most convenient of them is to use the special "root" function implemented in the program. To call it, you must specify its syntax in the cell or line of formulas, or click the "Insert Function" button.

excel square root

When choosing the first method, it is necessary to write "= ROOT (X)" in the cell, where instead of "X" you should indicate a number or a cell with a numerical value, the root of which must be found. In the second case, after clicking the "Insert Function" button, it is necessary to write "root" in the search field and select the proposed function. After that, a window opens in which you are offered to either register the number manually, or select the cell in which the desired number is located.

Math trick

However, when the task is to calculate the root in Excel, the square is not always implied. To calculate the root of any degree, you should use another way - using the mathematical meaning of the root. By definition, the value of the root of the nth degree is the number that must be raised to the power of n to get the expression under the root.

excel root

Thus, to get the root value of the nth degree, it is enough to raise the number to the inverse power - 1 / n. To calculate the root in Excel in this way, you can also use one of the possible solution algorithms. The first one is to use the function, the second is to explicitly indicate the action.

Having pressed the button "Insert function", it is necessary to write "degree" in the search line and select the corresponding function. In the window that opens, there will be two fields - in the first you need to specify a number, and in the second - the degree to which it needs to be raised. To indicate an explicit exponentiation , use the symbol “^”, after which the degree is indicated. It is worth noting that in the case of a fractional degree, it is necessary to enclose it in brackets in order to get the correct result. Thus, to calculate the square root, it is necessary to write a construction of the following form: X ^ (1/2) .

Source: https://habr.com/ru/post/K12757/


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