Muhammad Rafiullah Arain

I tried your code for this matrix
A = [2 3 4 5;6 7 8 9;10 11 12 13; 14 15 16 17];
and the result it's giving me is
 
1.0000 1.5000 2.0000 2.5000
        0 1.0000 2.0000 3.0000
    NaN NaN NaN NaN
    NaN NaN NaN NaN

But when I tried it manually I mean with my hands I got zeros replacing of all the places with NaN. Kindly help.
Thanks

Hi,
I have try to use this .m file but I get problem. I think this program works only for few number of x values. While I give 45 x & 45 associated y values, it gives wrong resutlts but while I use 25 or less x & associated y values it works fine. I used your program to interpolate blasius exact solutions(it comes under boundary layer theory)
         x y
         0 0
    0.2000 0.0066
    0.4000 0.0266
    0.6000 0.0597
    0.8000 0.1061
    1.0000 0.1656
    1.2000 0.2379
    1.4000 0.3230
    1.6000 0.4203
    1.8000 0.5295
    2.0000 0.6500
    2.2000 0.7812
    2.4000 0.9223
    2.6000 1.0725
    2.8000 1.2310
    3.0000 1.3968
    3.2000 1.5691
    3.4000 1.7470
    3.6000 1.9295
    3.8000 2.1161
    4.0000 2.3058
    4.2000 2.4981
    4.4000 2.6924
    4.6000 2.8883
    4.8000 3.0853
    5.0000 3.2833
    5.2000 3.4819
    5.4000 3.6809
    5.6000 3.8803
    5.8000 4.0799
    6.0000 4.2796
    6.2000 4.4795
    6.4000 4.6794
    6.6000 4.8793
    6.8000 5.0793
    7.0000 5.2793
    7.2000 5.4793
    7.4000 5.6792
    7.6000 5.8792
    7.8000 6.0792
    8.0000 6.2792
    8.2000 6.4792
    8.4000 6.6792
    8.6000 6.8792
    8.8000 7.0792
it finds correct y for given x values but it gives wrong results while interpolating.
Please check this, & if you correct the bug, Please send me a copy also
Thanking you

Best regards,
S.Jeya