00398nam a2200145Ia 4500003000400000020001800004082001500022100001500037245004700052250001200099260005000111300001000161650001600171653006500187SGT  a9788120327610  a519.4bSAS  aSastry,S.S  aIntroductory methods of numerical analysis  a4th Ed.  bPHI Learning Private LimitedaNew Delhic2010  a440p.  aMATHEMATICS  aERRORS IN NUMERICAL CALCULATIONS, NUMERICAL DIFFERENTIATION