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

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

[Birdman]

Share your entire code.

Answer 1

[Torsten]

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

Best wishes

Torsten.

[Amjad Green]

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

thanks so much

[John D'Errico]

No. Don't use an inverse!

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