18.1 Consider the function f (z) = sin(z). Divide this into eight equal intervals, (nine knots) from z = 0 to z = . Use

18.1 Consider the function f (z) = sin(z). Divide this into eight equal intervals, (nine knots) from z = 0 to z = π. Use the cubic B-spline method to interpolate between the nine values of z and compare the interpolated B-spline function with the actual value at the center of each interval. This exercise is best done on a computer.