Description: A non-linear model is a mathematical representation that describes a relationship between variables that cannot be expressed as a straight line. Unlike linear models, which assume a constant and proportional relationship between variables, non-linear models allow this relationship to be more complex and varied. This means that as one variable changes, the other may do so unevenly, which can include curves, peaks, or abrupt drops. Non-linear models are essential in various disciplines, as many real-world relationships are inherently non-linear. For example, in biology, population growth often follows a logistic model, which is non-linear, while in economics, the relationship between supply and demand can be non-linear due to factors such as price elasticity. The ability of non-linear models to capture these complexities makes them valuable tools in research and data analysis, allowing scientists and analysts to gain a deeper understanding of various phenomena they study.