MathGroup Archive 1996

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substitution rules and patterns

  • To: mathgroup at smc.vnet.net
  • Subject: [mg3410] substitution rules and patterns
  • From: Susan Rempe <rempe at euclid.chem.washington.edu>
  • Date: Mon, 4 Mar 1996 02:35:57 -0500
  • Sender: owner-wri-mathgroup at wolfram.com

Could someone tell me why the first substitution rule
works and the second doesn't----

In[70]:= (c^2)^(d/2)/.{(a_^2)^(b_ /2)->a^b}

Out[70]= c^d



In[71]:= (c^2)^(5/2)/.{(a_^2)^(b_ /2)->a^b}

Out[71]= (c^2)^(5/2)

Thanks in advance,

Susan Rempe
rempe at u.washington.edu


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