What is the difference between function and objective function in MATLAB ?

To know how to applicate the objective function for in a better way,

I want to find the difference between function and objective function, and what is the problems need to use the objective function ?

[Stephen23]

"What is the difference between function and objective function in MATLAB"

Nothing. An objective function is just a function being used in a particular way.

Answer 1

[Torsten]

No difference - "objective function" is just the terminus technicus for the function you want to maximize or mimimize in optimization problems.

Best wishes

Torsten.

[Johan Johan]

But in objective function the function should accept a vector, whose length is the number of independent variables, and return a scalar,and other conditions if specify the type optimization problem. How these conditions help in a better solution of the problem?

[Stephen23]

"But in objective function the function should accept a vector, whose length is the number of independent variables, and return a scalar,and other conditions if specify the type optimization problem"

Functions can have many different kinds of inputs and outputs. Those are the requirements for a function if you want to use it as the objective function for some optimization routine.

[John D'Errico]

An objective function ia still JUST A FUNCTION. That it is called an objective function is just a name. It is the function that an optimizer like fminunc will try to minimize, thus it provides the objective for the optimizer.

Shakespeare said it this way:

What's in a name? That which we call a rose By any other word would smell as sweet