exp(- x) exp(x) exp(x) + exp(- x) tanh(a) x ɛ [-2,2] in 4 sub-intervals The nodes are x,= - 2, x = - 1, x2 0, x3 = 1, x, = 2 Use these 5 nodes as given data to form the Van der Monde matrix, and find a polynomial to interpolate these 5 nodes. Please show the specific procedure to complete the problem.

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A: we can find the characteristic polynomial as follows:

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