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sqrtm

matrix square root

Syntax

y = sqrtm(x)

Arguments

x

a real or complex square matrix.

Description

y = sqrtm(x) is the matrix square root of the x matrix (x=y^2). Result may not be accurate if x is not symmetric.

Examples

x=[0 1;2 4]
w=sqrtm(x);
norm(w*w-x)
x(1,2)=%i;
w=sqrtm(x);norm(w*w-x,1)

See also

  • expm — square matrix exponential
  • sqroot — W*W' hermitian factorization
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Last updated:
Tue Oct 24 14:30:03 CEST 2023