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Re: Unidentified subject!
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From: |
Henry F. Mollet |
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Subject: |
Re: Unidentified subject! |
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Date: |
Wed, 04 May 2005 16:16:40 -0700 |
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User-agent: |
Microsoft-Entourage/10.1.1.2418 |
By trial and error on Octave 2.1.46
Henry
octave:87> acosh(-1.0e+7)
ans = -16.8054 + 3.1416i
octave:88> acosh(-1.0e+8)
ans = -Inf
octave:89> acosh(-1.0e+7+1.0e+7i)
ans = -17.1897 - 2.3562i
octave:90> acosh(-1.0e+8+1.0e+8i)
ans = -Inf
on 5/4/05 3:42 PM, Doug Stewart at address@hidden wrote:
> Matlab has on problem with this -- so is Octave broke????
>
> EDU» acosh(-7.2718e+15 + 1.3382e+15i)
>
> ans =
>
> 0.3466- 2.3562i
>
> EDU»
>
> Doug Stewart
>
>
> address@hidden wrote:
>
>> Good afternoon,
>>
>> I've got a problem calculating "acosh". I have to calculate cosh^(-1) of a
>> very
>> large complex number (-7.2718e+15 + 1.3382e+15i). If I try to calculate the
>> value of acosh on the command line of octave, the result is "Inf". If I've
>> got
>> the same in a script, the script apparently uses this "result" for further
>> calculations and I'm very suspicious about the output from this script. Is
>> there a limit for the value that one can use when evaluating acosh???
>>
>> Thanks,
>>
>> Hana.
>>
>> -------------------------------------------------
>>
>>
>>
>> -------------------------------------------------------------
>> Octave is freely available under the terms of the GNU GPL.
>>
>> Octave's home on the web: http://www.octave.org
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>> -------------------------------------------------------------
>>
>>
>>
>
>
>
> -------------------------------------------------------------
> Octave is freely available under the terms of the GNU GPL.
>
> Octave's home on the web: http://www.octave.org
> How to fund new projects: http://www.octave.org/funding.html
> Subscription information: http://www.octave.org/archive.html
> -------------------------------------------------------------
>
-------------------------------------------------------------
Octave is freely available under the terms of the GNU GPL.
Octave's home on the web: http://www.octave.org
How to fund new projects: http://www.octave.org/funding.html
Subscription information: http://www.octave.org/archive.html
-------------------------------------------------------------