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how do i calculate the quadratic spline of a set of data in matlab. i want to plot the resulting functions.
i can do it for linear with
x = [10 13 14 15 18 20 25];
y = [11 15 16 14 24 34 36];
cs = spline(x,[0 y 0]);
xx = [10 13 14 15 18 20 25];
but i want spline with degree 2
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