How to convert a maximization problem into a minimization problem

hello,

I have problem i will optimise it with intlinprog.

My problem is maximasation problem in the form

so i will transform it in minimaze problem with multiplication with '-' all the equations so the the cantraints will be >= how can I do please ?

and How Can I set the last equation

[Kelzang choden]

Hello sir Can you sent me the coding for this equation . Thankyou

Answer 1

[Matt J]

No, you only have to multiply the objective function by -1. The constraints can remain as they were.

[Meriem Ben Kalia]

Thank you and the last equation how put it in program