Invex function

An invex function is a special kind of mathematical function that behaves in a particular way when you change its input by a certain amount. Imagine you have a pile of blocks and you want to stack them up to make a tower. You can move the blocks around and try different combinations to see what works best. A invex function works kind of like that, but with numbers instead of blocks.

When you change the input of an invex function, the output changes in a way that is predictable and consistent. It's like moving a block from one part of the tower to another - it may shift things around, but you know it won't just disappear or change color or do something else unexpected!

Another important thing about an invex function is that it has a certain kind of smoothness to it. This means that if you change the input just a tiny bit, the output will change a tiny bit too - there won't be any sudden jumps or breaks in the function.

Overall, an invex function is a special kind of math tool that helps people understand how things change when you manipulate them in different ways. It can be really helpful for solving all kinds of problems in fields like economics, engineering, and computer science!