Limit is wrong

• Subject: Limit is wrong
• From: Richard Hennessy
• Date: Mon, 10 Aug 2009 16:25:41 -0400

try,

(%i1) signum(limit(subst(inf,x, a*x^2)));

sign: sign of infinity is undefined.
 -- an error.  To debug this try debugmode(true);
(%i2)

This is another bug, present in 5.18.1 and 5.19.0.  In the limit the sign does matter.  I think it is incorrect for limit to give an 
answer of "unsigned" infinity.

Rich

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