Section: Transforms/Decompositions
y = inv(x)
Internally, the inv function uses the matrix divide operators.
For sparse matrices, a sparse matrix solver is used.
--> a = randi(zeros(3),5*ones(3))
a =
1 1 4
1 0 1
0 4 1
--> b = inv(a)
b =
-0.3636 1.3636 0.0909
-0.0909 0.0909 0.2727
0.3636 -0.3636 -0.0909
--> a*b
ans =
1.0000 0.0000 0
0 1.0000 0.0000
0 0 1.0000
--> b*a
ans =
1.0000 0.0000 0.0000
0 1.0000 -0.0000
0 0 1.0000
-->
quit