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 4 3
1 1 3
1 4 5
--> b = inv(a)
b =
1.1667 1.3333 -1.5000
0.3333 -0.3333 0
-0.5000 0 0.5000
--> a*b
ans =
1.0000 0 0
0.0000 1.0000 0
0 0 1.0000
--> b*a
ans =
1.0000 0.0000 0
0 1.0000 0.0000
0 0 1.0000