00542nam a22001577a 450000500170000000800410001702000220005804100080008008200180008810000230010624500620012926000600019130000130025165000980026470000220036220210218153531.0200817b           ||||| |||| 00| 0 eng d  a978-0-07-061609-7  aeng  a517.38bSi47D  aSimmons, George F.  aDifferential equationsb: theory, technique, and practice  aChennaib: McGraw Hill Education Private Limited,c2017  ax, 534p.  aDifferential equations | Boundary value problems | Differential equations-Numerical solutions  aKrantz, Steven G.