Given the points xo = -2; x₁ = 0 and x₂ = 1 and let f be a function such that f(x) = 0, f(x₁) = 1 and f(x₂) = -1. Let P(x) be the Lagrange interpolating polynomial of f(x) at the points xo, X₁ and x₂. If P(x) is used to approximate f(x), then an approximation of f'(-1) is most nearly: -1/6 None of the choices 1/2 O-1/2

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