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Consider polynomial interpolation of the function f(x)=1/(1+25x^2) on the interval [-1,1] by (1) an interpolating polynomial determined...

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Advance Math

Consider polynomial interpolation of the functionf(x)=1/(1+25x^2) on the interval [-1,1] by (1) an interpolatingpolynomial determined by m equidistant interpolation points, (2) aninterpolating polynomial determined by interpolation at the m zerosof the Chebyshev polynomial T_m(x), and (3) by interpolating bycubic splines instead of by a polynomial. Estimate theapproximation error by evaluation max_i |f(z_i)-p(z_i)| for manypoints z_i on [-1,1]. For instance, you could use 10m points z_i.The cubic spline interpolant can be determined in MATLAB; see \"helpspline\". Use m=10 and m=20. Compute splines that interpolate atequidistant nodes and at Chebyshev nodes. Provide tables of theerrors and plots of the function f and the interpolatingpolynomials and splines.

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Matlab function for Lagrange Interpolationclear allclose allfirst functionf1x 1125x2loop for Lagrange polynomial for all na1b1 k0for n101020 kk1 Equidistance data points x1linspaceabn y1doublef1x1 Chebyshev data points for    See Answer
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