# Calculate Square root of a number in R Language – sqrt() Function

Square Root of a number is the value that yields the original number when multiplied by itself. If “x” is a number, its square root is written in mathematical notation as √x. we can calculate the square root in R using the sqrt() function.

In the R Programming Language, we have an inbuilt function known as the sqrt() Function to calculate the square root in R.

## sqrt() function in R

To find a number’s square root in R, use the sqrt() function.

• The integer you wish to find the square root of is the only argument required.
• The function yields the supplied number’s positive square root.

Syntax: sqrt(x)

Parameter:

x: Any numerical value greater than 0

## R

 `# R code to calculate square root of a number `   `x1 <- 16` `x2 <- 18`   `# Using sqrt() Function ` `sqrt``(x1) ` `sqrt``(x2) `

Output:

`[1] 4[1] 4.242641`

## R

 `# R code to calculate square root of a number `   `x1 <- 8.34526` `x2 <- -18`   `# Using sqrt() Function ` `sqrt``(x1) ` `sqrt``(x2) `

Output:

`[1] 2.888816[1] NaNWarning message:In sqrt(x2) : NaNs produced`

Here, in the above code, NaN is produced because we passed a negative value in the sqrt() function.

## R

 `# Calculate square roots of multiple numbers in a vector` `numbers <- ``c``(9, 25, 49, 64)` `results <- ``sqrt``(numbers)` `print``(results)  `

Output:

`[1] 3 5 7 8`

we calculate the square roots of multiple numbers stored in a vector. The `sqrt()` function is applied to each element in the vector, and the results are stored in another vector called `results`.

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