Introduction - If you have any usage issues, please Google them yourself
Splines are often used in the early twentieth century elongated strip of a flexible design drawings, a plurality of splines each link its edges bent curve is drawn along the cubic spline curve, and [a, b] given the range of n+ cubic spline interpolation function a node generally meet three conditions: 1 in each sub-section, which is a cubic polynomial interpolation function 2 interpolation function on a node is equal to its function value . 3. In the interval [a, b], the second derivative of the number of continuous interpolation function.