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Re : wierd differential


Hello !

Use E , not e !


F.Jaccard

-----Message d'origine-----
De : YOUNGWHAN [mailto:ywsong at buffalo.edu] 
Envoyé : samedi, 2. octobre 2004 09:18
À : mathgroup at smc.vnet.net
Objet : [mg51032] wierd differential


When I put

\!\(D[1 - e\^\(\(-2\) \((y + 1)\)\), y]\)

and, the result

\!\(2\ e\^\(\(-2\)\ \((1 + y)\)\)\ Log[e]\)

why Log[e] is added?





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