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asad1111
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i read that taylor series is used to approximate non linear function at optimal point x0 but i don't understand in which case we use first order approximation and in which cases we use higher order approximations?
asad1111 said:i read that taylor series is used to approximate non linear function at optimal point x0 but i don't understand in which case we use first order approximation and in which cases we use higher order approximations?
Linearization is the process of approximating a non-linear model with a linear model in order to simplify calculations and make the model easier to analyze. This is often done by taking the first derivative of the non-linear model and evaluating it at a specific point.
Linearization allows us to use the tools and techniques developed for linear models to analyze non-linear models. It also makes it easier to understand the behavior of the non-linear model and make predictions based on the linear approximation.
The main assumption is that the non-linear model is close to the linear approximation at the chosen evaluation point. This means that the linearization may not be accurate for values far away from the evaluation point.
The evaluation point is usually chosen to be a point where the non-linear model is easy to calculate or has a known value. It can also be chosen based on the specific problem being analyzed, such as choosing the equilibrium point for a dynamic system.
No, linearization is only applicable for non-linear models that can be approximated by a linear model. If the non-linear model is too complex or has non-linearities that cannot be approximated by a linear model, then linearization cannot be used.