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Re: Simplifying ArcTan


It does !

But you have to avoid 2 mistakes :

1) The brackets on wrong place
2) x may not be Pi/2

In[4]:=
FullSimplify[ArcTan[Cos[x], Sin[x]],
  x >= 0 && x < Pi/2]

Out[4]=
x

-----Message d'origine-----
De : fizzy [mailto:fizzycist at knology.net]
Envoyé : lun., 28. mars 2005 09:42
À : mathgroup at smc.vnet.net
Objet : [mg55526] Simplifying ArcTan



Why does   FullSimplify[ ArcTan[ Cos[x], Sin[x] , x>=0 && x <= Pi/2 ]
not output  x ?


Thanks...jerry blimbaum



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