Determine the Lagrangian coefficient functions, in explicit polynomial form, relative tothe ordinates of f(x) at the four points x = -2, -1, 1, and 2. Use the results to obtainapproximate expressions...

Determine the Lagrangian coefficient functions, in explicit polynomial form, relative tothe ordinates of f(x) at the four points x = -2, -1, 1, and 2. Use the results to obtainapproximate expressions for f(0), f0(0), and R 2-2f(x)dx in terms of those ordinates.