txk

hi,

i need to do some matrix inversion. i dont think VB has the built-in function for that. Does anyone have one?

thanks

MaxMel

Do you know how to make it by hand?

MaxMel

Genna

well, i dont think vb have matrix type functions as i havent come across any of them so far
for matrices, you can try doing arrays and loop to obtain the positions
If you are familar with a certain formula where you used the triangle-like structures and manuplicate them, you will find that it is more efficient then the normal one.
I have to look up my text later

txk

I have done 4 x 4 matrix inversion before by hand. The matrix elements were all symbols not numbers so I couldn’t use computer program. It was quite a nightmare. If my memory is correct, there are many ways for matrix inversion manipulation. The question is which one would be the best for computer code.

Iceplug

I assume that if you can create a code that will convert a matrix to reduced form, then you can connect the original matrix to an identity, do the row operations, and then take the end of the matrix for the inverse.

Will these matrices have the same dimensioning?
If so, then I think you can just do it by hand with symbols and use your expressions that you solved to pull values directly from the matrix.