Services & Resources / Wolfram Forums
-----
 /
MathGroup Archive
2007
*January
*February
*March
*April
*May
*June
*July
*August
*September
*October
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 2007

[Date Index] [Thread Index] [Author Index]

Search the Archive

Unexpected message 2

  • To: mathgroup at smc.vnet.net
  • Subject: [mg73782] Unexpected message 2
  • From: "dimitris" <dimmechan at yahoo.com>
  • Date: Wed, 28 Feb 2007 04:35:03 -0500 (EST)

I forgot to mention that even settings like the following have no
results

In[19]:=
Integrate[Cos[a*x]*CosIntegral[b*x], {x, 0, Infinity}, Assumptions ->
a > b > 0]
Integrate::idiv: Integral of Cos[a\x]\CosIntegral[b\x] does not
converge on \
{0, =E2=88=9E}.
Out[19]=
Integrate[Cos[a*x]*CosIntegral[b*x], {x, 0, Infinity}, Assumptions ->
a > b > 0]

In[20]:=
Integrate[Cos[a*x]*CosIntegral[a*x], {x, 0, Infinity}]
Integrate::idiv: Integral of Cos[a\x]\CosIntegral[a\x] does not
converge on \
{0, =E2=88=9E}.
Out[20]=
Integrate[Cos[a*x]*CosIntegral[a*x], {x, 0, Infinity}]

Note also that e.g.

In[70]:=
Integrate[Cos[EulerGamma*x]*CosIntegral[b*x], {x, 0, Infinity}]
Integrate::idiv: Integral of Cos[EulerGamma\x]\CosIntegral[b\x] does
not \
converge on {0, =E2=88=9E}.
Out[70]=
Integrate[Cos[EulerGamma*x]*CosIntegral[b*x], {x, 0, Infinity}]

In[72]:=
Integrate[Cos[a*x]*CosIntegral[EulerGamma*x], {x, 0, Infinity}]
Integrate::idiv: Integral of Cos[a\x]\CosIntegral[EulerGamma\x] does
not \
converge on {0, =E2=88=9E}.
Out[72]=
Integrate[Cos[a*x]*CosIntegral[EulerGamma*x], {x, 0, Infinity}]



  • Prev by Date: Re: deleting a title or subtitle in a notebook
  • Next by Date: Re: 1>0 gives False
  • Previous by thread: monomials in Graded Lexicographic Order and associated factorials
  • Next by thread: Numerical integration