Convert a regressive function to a matrix

Forum|Forum|3 years ago
March 24, 2023
3 replies
2276 views

I have a regressive function Y[k and i need to express it as a matrix. Ultimately, I need to smooth it and make it a continuous function using either linear interpolation or splines.

Note that the regressive function is expressed using subscripts, y[k.

I'm using Mathcad Prime

Mathcad Usage

Best answer by LucMeekes

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Luc

W

Werner_E

25-Diamond I

Note that the regressive function is expressed using subscripts, y[k.

Then its not a function but rather a vector of values!?

Its not clear to me what you are looking for.

How about posting a example worksheet?

G

gatlas

Author

11-Garnet

Werner,

I'm trying to convert a regressive function y[k to a smoothe function that can be readily differentiated.

Please see the attachment.

Thanks,

Glen

1_Smooth-Yk.zip

L

LucMeekes

Answer

23-Emerald IV

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Luc

1_LM_20230324_Smooth.zip

T

terryhendicott

21-Topaz II

Hi perhaps answer can be found on these help locations:

Regression

Interpolation and Prediction Functions

Beyond this you may need to expand the question

W

Werner_E

25-Diamond I

Because your recursively defined series follows a linear recursion, we can always find the direct general formula for computing the nth term as a function of n,
So there is no need for interpolation or approximation via a regression.