Re: Constrained Nonlinear Optimization problem

[Ben Abbott]

On May 2, 2014, at 7:40 PM, Ether Jones <address@hidden> wrote:

> 
> Could someone please show me how to set up this problem in Octave?
> 
> Maximize (x + y)
> 
> Subject to constraints:
> 
> 0 <= x <= 75
> 
> 0 <= y <= 75
> 
> 29.5 - sqrt(0.184*(x+y)^2 + x^2) >= 0.0
> 
> 45.5 - sqrt(0.184*(x+y)^2 + y^2) >= 0.0
> 
> 
> I have solved it with Maxima, Python, AMPL, and Excel and get the following 
> answer:
> 
> x = 17.2
> 
> y = 38.7
> 
> But I'm having trouble setting it up in Octave
> 
> Thank you.

I'd use the sqp() function. The documentation is at the link below.

https://www.gnu.org/software/octave/doc/interpreter/Nonlinear-Programming.html

You'll need to convert to a minimization problem. 

Ben