Construct the natural cubic spline for the following data. a. X f(x) b. X C. 8.3 8.6 X -0.5 -0.25 0 17.56492 18.50515 f(x) -0.0247500 0.3349375 1.1010000 d. 0.8 1.0 X 0.1 0.2 0.3 0.4 f(x) 0.22363362 0.65809197 f(x) -0.62049958 -0.28398668 0.00660095 0.24842440

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