GNU Octave Equation Help

[Najam Sheikh]

Please replace "2x" by "2*x"

Thanks,

Najam

On Sun, Aug 23, 2015 at 9:30 PM, <address@hidden> wrote:

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Today's Topics:

   1. Parse error - Syntax Error (Mike)
   2. GNU Octave Equation Help (Mike)


----------------------------------------------------------------------

Message: 1
Date: Sat, 22 Aug 2015 16:44:53 -0700 (PDT)
From: Mike <address@hidden>
To: address@hidden
Subject: Parse error - Syntax Error
Message-ID: <address@hidden>
Content-Type: text/plain; charset=us-ascii

Hi,I am using GNU Octave to solve a numerical integration but I keep getting
Parse and Syntax Error for the equation that I write.For simplicity, I wrote
a simpler equation to help demonstrate my problem. The equation written is
part of the formula used for the surface area of an object via volume of
revolution.The error message is inserted as a picture and I've also written
the equation
below:y=(sqrt(25-x.^2))*(sqrt(1+((1/2)*(-2x)*(1/(sqrt(25-x.^2)))).^2))An
error keeps coming up on the "x" part of the "(-2x)" in the middle of the
equation.If you can find the mistake or let me know an alternative method,
please let me know ASAP!Thanks!



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------------------------------

Message: 2
Date: Sat, 22 Aug 2015 22:16:40 -0700 (PDT)
From: Mike <address@hidden>
To: address@hidden
Subject: GNU Octave Equation Help
Message-ID: <address@hidden>
Content-Type: text/plain; charset=us-ascii

Hi, I am using GNU Octave to solve a numerical integration but I keep getting
Parse and Syntax Error for the equation that I write. For simplicity, I
wrote a simpler equation to help demonstrate my problem. The equation
written is part of the formula used for the surface area of an object via
volume of revolution. The error message is inserted as a picture and I've
also written the equation below:
y=(sqrt(25-x.^2))*(sqrt(1+((1/2)*(-2x)*(1/(sqrt(25-x.^2)))).^2))
An error keeps coming up on the "x" part of the "(-2x)" in the middle of the
equation.   If you can find the mistake or let me know an alternative
method, please let me know ASAP! Thanks!

Error Message:
<http://octave.1599824.n4.nabble.com/file/n4672237/Capture.png>



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--

Sheikh Najam,

Research Scholar, Ph.D

Dept of Aerospace Engg

IIT-Madras, India