i have written a code to get LU decomposition,now i need a code to solve LUx=b

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Amjad Green 2018-2-22

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评论： John D'Errico 2018-2-24

采纳的回答： Torsten

L,U is n*n matrix i'm working on Doolittle method of solving Ax=b i need a code to solve for x

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Birdman 2018-2-22

Share your entire code.

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Torsten 2018-2-22

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First solve L*y = b for y, then solve U*x = y for x.

Best wishes

Torsten.

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Amjad Green 2018-2-24

so just y=(L^-1)*b then (U^-1)*y=x ?

thanks so much

John D'Errico 2018-2-24

No. Don't use an inverse!

Did your teacher tell you about back and forward substitution? They should have done so by this point.

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