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Re: bug? f'[x]'

• To: mathgroup at smc.vnet.net
• Subject: [mg90902] Re: [mg90894] bug? f'[x]'
• From: Murray Eisenberg <murray at math.umass.edu>
• Date: Tue, 29 Jul 2008 01:37:26 -0400 (EDT)
• Organization: Mathematics & Statistics, Univ. of Mass./Amherst
• References: <200807281153.HAA20595@smc.vnet.net>
• Reply-to: murray at math.umass.edu

    FullForm /@ {f'[x], f[x]'}
{Derivative[1][f][x], Derivative[1][f[x]]}

    FullForm /@ {f''[x], f'[x]'}
{Derivative[2][f][x], Derivative[2][f][x]}


Benjamin.R.Lewis at gmail.com wrote:
> G'day,
> 
> In[]:= f'[x] =!= f[x]' && f''[x] === f'[x]'
> Out[]= True
> 
> Can anyone explain this?
> 
> -Ben
> 

-- 
Murray Eisenberg                     murray at math.umass.edu
Mathematics & Statistics Dept.
Lederle Graduate Research Tower      phone 413 549-1020 (H)
University of Massachusetts                413 545-2859 (W)
710 North Pleasant Street            fax   413 545-1801
Amherst, MA 01003-9305

• References:
  • bug? f'[x]'
    • From: Benjamin.R.Lewis@gmail.com