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Re: Solve with MUMPS failed: matrix is singular


From: lahoussaine BOURRICHE
Subject: Re: Solve with MUMPS failed: matrix is singular
Date: Fri, 30 Sep 2022 10:45:47 +0200

Thank you for the clarification. 
When for example I use an _expression_ like " pow(u,2) +6 " for example it works. But when i use a complicated _expression_ ( atan, sqrt ... ) I get this  error.

snippet of code :
"
md.add_macro('f(u)',"atan(u)")
md.add_nonlinear_term(mim,'f(u).Test_u', region)

"



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