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*To*: mathgroup at smc.vnet.net
*Subject*: [mg80065] question
*From*: dimitris <dimmechan at yahoo.com>
*Date*: Sat, 11 Aug 2007 02:21:33 -0400 (EDT)
Let's see if Mathematica 6 has become better.
In Mathematica 5.2 (and as well 6; as it
was mentioned in a recent thread).
In[11]:=
FourierTransform[Sign[y]*Sign[y], y, q]
Out[11]=
Sqrt[2*Pi]*DiracDelta[q]
which is correct.
In Mathematica 5.2
In[5]:=
FourierTransform[Sign[y]*Sign[a*y], y, q]
Out[5]=
(1/q)*((I*(1 - E^(I*q*Sqrt[1/Integrate`NLtheoremDump`myMax[0,
0]^2]*Integrate`NLtheoremDump`myMax[0, 0]^2) +
E^(2*I*q*Sqrt[1/Integrate`NLtheoremDump`myMax[0,
0]^2]*Integrate`NLtheoremDump`myMax[0, 0]^2))*Sqrt[2/Pi]*
(2 + DiscreteDelta[a] - UnitStep[-a] - UnitStep[a]))/E^(I*q*Sqrt[1/
Integrate`NLtheoremDump`myMax[0, 0]^2]*
Integrate`NLtheoremDump`myMax[0, 0]^2))
I think outputs like this is a mini nightmare for the developers.
What does version 6 returns?
Thanks
Dimitris
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