Question about the derivative of Abs
- To: mathgroup at smc.vnet.net
- Subject: [mg106097] Question about the derivative of Abs
- From: Sam Takoy <samtakoy at yahoo.com>
- Date: Fri, 1 Jan 2010 05:36:12 -0500 (EST)
Hi, I kind of asked this question before, but in a more confusing context, so now I would like to ask it by itself. In the course of my computations, I get Abs' and Abs''. It is applied to a positive number, so I think those values should be 1 and 0. However, Mathematica fails to simplify it. For example In[34]:= Abs'[2.0] Out[34]= \!\(\*SuperscriptBox["Abs", "\[Prime]", MultilineFunction->None]\)[2.] These expressions really mess up my answers. How do I get Mathematica to do these simplifications? Thanks Sam
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