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    Lagrange Interpolation

    Uploaded by

    Aronyak

    Copyright:

    © All Rights Reserved
    Download as TXT, PDF, TXT or read online from Scribd

    Lagrange Interpolation

    Uploaded by

    Aronyak
    11 views1 page

    Copyright

    © © All Rights Reserved

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    TXT, PDF, TXT or read online from Scribd

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    Copyright:

    © All Rights Reserved
    Download as TXT, PDF, TXT or read online from Scribd
    Download as txt, pdf, or txt
    11 views1 page

    Lagrange Interpolation

    Uploaded by

    Aronyak

    Copyright:

    © All Rights Reserved
    Download as TXT, PDF, TXT or read online from Scribd
    Download as txt, pdf, or txt
    of 1

    #include<iostream>

    #include<conio.h>

    using namespace std;

    int main()
    {
    float x[100], y[100], xp, yp=0, p;
    int i,j,n;

    /* Input Section */
    cout<<"Enter number of data: ";
    cin>>n;
    cout<<"Enter data:"<< endl;
    for(i=1;i<=n;i++)
    {
    cout<<"x["<< i<<"] = ";
    cin>>x[i];
    cout<<"y["<< i<<"] = ";
    cin>>y[i];
    }
    cout<<"Enter interpolation point: ";
    cin>>xp;

    /* Implementing Lagrange Interpolation */


    for(i=1;i<=n;i++)
    {
    p=1;
    for(j=1;j<=n;j++)
    {
    if(i!=j)
    {
    p = p* (xp - x[j])/(x[i] - x[j]);
    }
    }
    yp = yp + p * y[i];
    }
    cout<< endl<<"Interpolated value at "<< xp<< " is "<< yp;

    return 0;
    }

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