problem with elementary transformation for matrix
- To: mathgroup at smc.vnet.net
- Subject: [mg131375] problem with elementary transformation for matrix
- From: chris zheng <zslylc at gmail.com>
- Date: Tue, 2 Jul 2013 00:45:42 -0400 (EDT)
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- Delivered-to: l-mathgroup@wolfram.com
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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.