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MathGroup Archive 2004

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Limit problem

  • To: mathgroup at smc.vnet.net
  • Subject: [mg51098] Limit problem
  • From: Mike Zeitzew <pdop at yahoo.com>
  • Date: Mon, 4 Oct 2004 06:18:21 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

Why is Limit giving me the wrong answer for this simple divided difference?   I am using 5.0.1.0 /
XP

In[1]:=
Clear[f,h,x]

In[2]:=
f[x_]:=Sin[12*x^2]/(3*x^2)

In[3]:= Limit[(f[0.4 + h] - f[0.4])/h, h -> 0]

Out[3]= 
-&#8734;

In[4]:=
f'[0.4]

Out[4]=
-16.631


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