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# How to calculate the square root of a number in R

harris910

The sqrt() function in R is used to calculate the square root of a non-negative number.

Figure 1 shows the mathematical representation of the sqrt() function.

Figure 1: Mathematical representation of the sqrt() function

### Syntax

sqrt(number)


### Parameter

sqrt() requires a non-negative number as a parameter.

### Return value

sqrt() returns the square root of the number sent as a parameter.

If a negative number is sent as a parameter, then sqrt() returns NaN, along with a warning message.

### Example

#Perfect square root
a <- sqrt(4);
print(paste0("sqrt(4): ", a))

b <- sqrt(0);
print(paste0("sqrt(0): ", b))

#simple number
c <- sqrt(5);
print(paste0("sqrt(5): ", c))

d <- sqrt(4.5);
print(paste0("sqrt(4.5): ", d))

#negative number
e <- sqrt(-2);
print(paste0("sqrt(-2): ", e))

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math
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