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Limit bug?

• To: mathgroup at smc.vnet.net
• Subject: [mg65904] Limit bug?
• From: "Ray Koopman" <koopman at sfu.ca>
• Date: Sat, 22 Apr 2006 04:54:26 -0400 (EDT)
• Sender: owner-wri-mathgroup at wolfram.com

Does anyone have an explanation for this?
I was expecting Out[2] to be Log[2].

In[1]:= Limit[ Log[Cosh[x]] - x, x -> Infinity]

Out[1]= -Log[2]

In[2]:= Limit[ x - Log[Cosh[x]], x -> Infinity]

Out[2]= Limit[x-Log[Cosh[x]],x\[Rule]\[Infinity]]