inv - Compute symbolic matrix inverse
Syntax
R = inv(A)
Description
R = inv(A) returns inverse of the symbolic
matrix A.
Examples
Compute the inverse of the following matrix of symbolic numbers:
A = sym([2,-1,0;-1,2,-1;0,-1,2]);
inv(A)
The result is:
ans =
[ 3/4, 1/2, 1/4]
[ 1/2, 1, 1/2]
[ 1/4, 1/2, 3/4]
Compute the inverse of the following symbolic matrix:
syms a b c d
A = [a b; c d];
inv(A)
The result is:
ans =
[ d/(a*d - b*c), -b/(a*d - b*c)]
[ -c/(a*d - b*c), a/(a*d - b*c)]
Compute the inverse of the symbolic Hilbert matrix:
inv(sym(hilb(4)))
The result is:
ans =
[ 16, -120, 240, -140]
[ -120, 1200, -2700, 1680]
[ 240, -2700, 6480, -4200]
[ -140, 1680, -4200, 2800]
See Also
det | eig | rank
 | int8, int16, int32, int64 | | iztrans (sym) |  |
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