How to optimize a function?

f(x)=x^2+2x-3

x belong to [0,20]

i- How can I optimize the function in matlab?

[Stephen23]

@Noor Bano: what does "optimize the function" mean? What is the output that you want from this?

[Ammy]

How to maximize a function, or how to minimize a function, or in other words on which x value the function gives maximum or minimum value.

[Torsten]

Use "fmincon" with the bound constraints x>=0 and x<=20.

Answer 1

[Torsten]

x1=0;
x2=20;
fun=@(x)x^2+2x-3;
x = fminbnd(fun,x1,x2)

[KALYAN ACHARJYA]

fun=@(x)x^2+2*x-3;