
problem with elementary transformation for matrix
Posted:
Jul 2, 2013 12:31 AM


Hi, All,
I used a series of elementary transformation to reduce a matrix to a tridiagonal matrix. when I wrote the program in notebook, I run step by step. everything ran well and it give me explicitly the result of a matrix.
but after I save this notebook and open it after a day, I run the whole notebook and print out the product of these elementary transformation, Mathematica does not give me explicit result of matrix, it gives me a product of these elementary transformation. do not know why. I print out Print[V] and here is my result:
Inverse[{{1,1,2/5},{0,2,1/5},{0,1,(2/5)}}.Inverse[addRowMultiple[{{1,0,0},{0,1,0},{0,0,1}},4,2,1]].Inverse[addRowMultiple[addRowMultiple[{{1,0,0},{0,1,0},{0,0,1}},(17/5),3,2],13/5,3,1]]].{{3,4,3/5},{2,1,2/5},{1,1,(3/5}}.Inverse[addRowMultiple[{{1,0,0},{0,1,0},{0,0,1}},4,2,1]].Inverse[addRowMultiple[addRowMultiple[{{1,0,0},{0,1,0},{0,0,1}},(17/5),3,2],13/5,3,1]]
please help me and it is urgent for me.

