Date: Dec 30, 2012 6:40 AM
Author: Emrah
Subject: how to plot a function subject to constraints.

I have this function:

function f=cost(x)
f=1.10471*x(1)^2*x(2)+0.04811*x(3)*x(4)*(14.0+x(2));
subject to

g(1)=tau-tau_max;
g(2)=sigma-sigma_max;
g(3)=x(1)-x(4);
g(4)=0.10471*x(1)^2+0.04811*x(3)*x(4)*(14+x(2))-5.0;
g(5)=0.125-x(1);
g(6)=delta-delta_max;
g(7)=P-PcX;
all g[1..7] should be <= 0

I have to keep any two of them as a constant and plot the f(x) The upper and lower bounds are respectively (x1..x4)

LowerBound=[0.125 0.1 0.1 0.125];
UpperBound=[5.0 10.0 10.0 5.0];
thanks in advance...