Let x and y be two vectors containing the x-coordinates and y-coordinates of your data: xX (12345678910) y=(29.36, 79.60, 28.24, 15.34, 66.59, 53.42, 52.13, 61.19, 85.36, 13.00) use these data points to form a natural cubic spline s(x)- Then enter the value of $(4.5)
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