Dear Friends, please help me in finding (matlab code) the inverse of this matrix. F=[ 1 1 -1 -1; -a b c d; e -f -g h; j k l m]. where a, b, c etc are constants.Best Regards.

Dear Friends, please help me in finding (matlab code) the inverse of this matrix.

F=[ 1 1 -1 -1; -a b c d; e -f -g h; j k l m].

where a, b, c etc are constants.Best Regards.

Answer 1

[Roger Stafford]

The Symbolic Math Toolbox contains the function 'inv' which will find the symbolic inverse of your matrix.

Or, if the values of your 12 constants are known, you can use the regular matlab function of the same name, 'inv'.

[hassan ullah]

Exactly, Thanks a lot for your precious time and help.

Answer 2

[Geoff Hayes]

Hassan - if you are looking for the algorithm to determine the 4x4 matrix inverse, then see the notes from http://www.euclideanspace.com/maths/algebra/matrix/functions/inverse/fourD/index.htm which you can then update given your above matrix.

[hassan ullah]

Ok, Sir, i have sort out this problem by using symbolic function. Thanks for your help.