Find the Lagrange polynomial that passes through the followingpoints.
(-3, 0.1), (-2, 0.2), (-1, 0.5), (0, 1),(1, 0.5), (2, 0.2), (3, 0.1)
Plot it for -4 ≤ x ≤ 4. On the same graph, draw the curve f(x) =1/(1+x2).
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