fmincon help

Hi, i want to plot y=f(x) while x<2; y<5; x+y<4; i found that fmincon function can be useful in my case,can anyone guide me please?

[Sean de Wolski]

huh? You want to plot it? FMINCON is used for minimizing a function of Xn variables, that returns a scalar value, subject to constraints. Do you want to find the Xn values and then plot it? Please clarify the question and provide enough detail we can make an educated guess.