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Hermite Polynomial: The Hermite Polynomial is an extension of the LaGrange Polynomial Interpolation, designed to reduce the runtime of LaGrange while also reducing the degree of error.

a) What is the runtime and error associated with LaGrange Polynomial Interpolation and How does the Hermite Polynomial Hi(x) improve on Li(x)? Explain your answer!

Answer :

Final answer:

The runtime of LaGrange Polynomial Interpolation is O(n^2), and the error depends on the spacing of the data points. The Hermite Polynomial improves on LaGrange Polynomial Interpolation by considering the values of the function's derivatives at the data points, resulting in a more accurate approximation and reduced error.

Explanation:

LaGrange Polynomial Interpolation is a method used to approximate a function using a polynomial of degree n. The runtime of LaGrange Polynomial Interpolation is O(n^2), where n is the number of data points. This means that as the number of data points increases, the runtime of the interpolation also increases quadratically.

The error associated with LaGrange Polynomial Interpolation depends on the spacing of the data points. If the data points are evenly spaced, the error can be significant for large values of n. This is because the polynomial interpolant may oscillate between the data points, leading to a larger error.

The Hermite Polynomial, denoted as Hi(x), improves on LaGrange Polynomial Interpolation by introducing additional information about the function's derivatives at the data points. Instead of only considering the function values, the Hermite Polynomial also takes into account the values of the function's derivatives at the data points. This additional information allows for a more accurate approximation and reduces the degree of error.

Learn more about runtime and error of lagrange polynomial interpolation and improvement by hermite polynomial here:

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