Question: matlab code: make own fuctions to create cubic spline interpolation, lagrangian interpolation, TDMA for date. then, solve cubic spline interpolation, TDMA is requred. xi =[-1

matlab code: make own fuctions to create cubic spline interpolation, lagrangian interpolation, TDMA for date. then, solve cubic spline interpolation, TDMA is requred.

xi =[-1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1

yi =[0.2 0.4386 0.5814 0.7576 0.926 1 0.926 0.7576 0.5814 0.4386 0.2]

plot three curve , f(x) =1/(1+2*x^2), cubic spline, lagrangian interpolation.

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