Lagrange's Interpolation on Scilab

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So, this is  Lagrange's Interpolation on Scilab in which you can perform our practical on the Scilab console.

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 Lagrange's Interpolation on Scilab

Q-  Find the value of Y at X is equals to 45 for the data using Lagrange's interpolation x=10 20 30 40 50 y=45 65 80 90 100

Youtube link- https://youtu.be/lIFoL10X60E

👉Code -

clc;clear;
disp("Langranges interpolation")
X=[10 20 30 40 50];
Y=[45 65 80 90 100]
Xe=45, n=length(X);S=0
for i=1:n
    p=1; for j=1:n
        if (j~=i)
    p=p*(Xe-X(j))/(X(i)-X(j))
    end
end
S=S+p+Y(i)
end
disp(S,'Value of y when X=45 is')

👉Output-

"Langranges interpolation"

   381.

  "Value of y when X=45 is"

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