# Splines, Implementation in Mathematica 10, Help?

Posted 9 years ago
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 Manipulate[ Grid[{{Text@"Tridiagonal Matrix", Text@"Its Characteristic Equation"}, {Text@Item[ Pane[TraditionalForm[***tridiagonal***[n] // MatrixForm], {270, 200}, Alignment -> {Center, Top}], Alignment -> Center], Text@Item[ Pane[TraditionalForm[p[n, x]], {270, 200}, Alignment -> {Center, Top}], Alignment -> {Center, Top}]}, {Text@"Continued Fraction", Text@Row[{"Eigenvalue Plot", Style["x", Italic], "=", Style["x", Italic], "{", Style["r", Italic], "}"}]}, {Text@Item[ Pane[TraditionalForm[***recurrence***[n, x, r]], {270, 200}, Alignment -> {Center, Top}], Alignment -> {Center, Top}], Item[ContourPlot[Evaluate[p[n, x]], {r, -10, 10}, {x, -10, 20}, ImageSize -> {270, 200}], Alignment -> {Center, Top}]}}, Frame -> All, Background -> LightBlue, Alignment -> Top], {{n, 2, "Size of Matrix"}, 2, 9, 1, Appearance -> "Labeled"}, ContinuousAction -> False, SaveDefinitions -> True] I have got this code from Mathematica website, but my problem is I'm not able to use these two functions which are bold and italic namely, "tridiagonale", & , "recurrence", in Mathematica 10, as this code is written in the earlier version.Can you help me out plz?
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Posted 9 years ago
 Thanks A lot ;)
Posted 9 years ago
 I was confused in your post by your use of tridiagonal and recurrence as lowercase parameters. I do not see anything related to recurrance in the notebook that you linked to. However you will find out how to replicate the functionality contained in LinearAlgebraTridiagonal by reading this:http://reference.wolfram.com/language/Compatibility/tutorial/LinearAlgebra/Tridiagonal.html
Posted 9 years ago
 http://mathworld.wolfram.com/notebooks/NumericalMath/CubicSpline.nbthis is the url but i could not find any relative material to my question? could you please help me out
Posted 9 years ago
 I imagine that the code for tridiagonal and recurrence are defined somewhere on the website that you mention. What is its URL?