B = sqrt(X)
B = sqrt( returns
the square root of each element of the array
For the elements of
X that are negative or complex,
sqrt function's domain includes
negative and complex numbers, which can lead to unexpected results
if used unintentionally. For negative and complex numbers
= u + i*w, the complex square root
sqrt(r)*(cos(phi/2) + 1i*sin(phi/2))
r = abs(z) is the radius and
= angle(z) is the phase angle on the closed interval
<= phi <= pi.
If you want negative and complex numbers to return error messages
rather than return complex results, use
Create a row vector containing both negative and positive values.
X = -2:2
X = -2 -1 0 1 2
Compute the square root of each element of
Y = sqrt(X)
Y = Columns 1 through 4 0.0000 + 1.4142i 0.0000 + 1.0000i 0.0000 + 0.0000i 1.0000 + 0.0000i Column 5 1.4142 + 0.0000i
X— Input array
Input array, specified as a numeric scalar, vector, matrix, or multidimensional array.
Complex Number Support: Yes