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#rbf-interpolation

1 question from Nearest Neighbors & Kernel Methods

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hardAI-checkedNearest Neighbors & Kernel Methods

One-dimensional RBF interpolation uses $f(x) = \sum_{i=1}^{3} c_i\,|x - x_i|$ with nodes $x_1 = 0$ , $x_2 = 3$ , $x_3 = 4$ , and the coefficients are chosen so that $f(0) = 1$ , $f(3) = 4$ and $f(4) = 3$ . What is $f(6)$ ?

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