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MathGroup Archive 1999

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Re: Re: Bug?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg15899] Re: [mg15854] Re: Bug?
  • From: BobHanlon at aol.com
  • Date: Wed, 17 Feb 1999 23:33:43 -0500
  • Sender: owner-wri-mathgroup at wolfram.com

In a message dated 2/12/99 8:49:55 PM, ck at kagi.com writes:

>> This does not occur in any Mathematica I have.  Try it again.
>> The error message looks like you may have mistyped.
>> 
>> Moderator
>> 
>> > I have found something strange in Mathematica:
>> > 
>> > Integrate[Exp[x]/Log[x],x]
>> > 
>> > which yields the following error message:
>> > 
>> > Log::"argt": 
>> >     "\!\(Log\) called with \!\(0\) arguments; \!\(1\) or \!\(2\)
>> > arguments \
>> > are expected."
>> > 
>> > This is on Mathematica 3.0.1.1x Macintosh (Student).
>> > 
>> > -- 
>> > Christoffer Karlsson
>> > Macintosh Software Developer
>> > 
>
>Still happens. I tried to write it in 3 different forms, but still gives
>me the same error (other variations such as Log[x]/Exp[x] works just
>fine). I know it is bizarre but I am certain I have typed it correctly
>but there might be something wrong with my setup (not that I have
>really fiddled with it).
>

This bug also occurs on my Mac.  It will plot the function but will not
evaluate it.

{$System, $Version}

{"Power Macintosh", "Power Macintosh 3.0 (May 6, 1997)"}

Integrate[Exp[x]/Log[x], x]

Log::argt: Log called with 0 arguments; 1 or 2
     arguments are expected.

Integrate[E^x/Log[x], x]

Plot[Exp[x]/Log[x], {x, 2, 5}];

(* Plot removed *)

Integrate[Exp[x]/Log[x], {x, 2, 5}]

Log::argt: Log called with 0 arguments; 1 or 2
     arguments are expected.
Log::argt: Log called with 0 arguments; 1 or 2
     arguments are expected.
Log::argt: Log called with 0 arguments; 1 or 2
     arguments are expected.
General::stop: 
   Further output of Log::argt
     will be suppressed during this calculation.

Integrate[E^x/Log[x], {x, 2, 5}]


Bob Hanlon


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