suppressing error messages

• Subject: suppressing error messages
• From: Barton Willis
• Date: Tue, 16 Sep 2008 10:29:46 -0500

"Andrej Vodopivec" wrote on 09/16/2008 07:59:13 AM:
 
> You can use the errormsg variable. But there is a bug:

Thanks:

(%i20) sol : solve(a*x^2 + b*x + c,x)$

(%i21) safer_subst([a=0],sol);
(%o21) [x=(2*c)/(abs(b)-b),x=-(2*c)/(abs(b)+b)]

(%i22) safer_subst([a=0, b=10],sol);
(%o22) [x=und,x=-c/10]

Barton

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