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{SECT 0 {EXCHG {PARA 4 "" 0 "" {TEXT 256 14 "Ejercicios de " }}{PARA 
4 "" 0 "" {TEXT 258 29 "(11) Las Ecuaciones el\355pticas" }}{PARA 4 "
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}{TEXT 259 2 "  " }{TEXT 260 33 "(del EXAMEN ORDINARIO DE 19ENE12)" }}
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0 "delta^2  u/(delta  x^2)" "6#*(%&deltaG\"\"#%\"uG\"\"\"*&F$F'*$%\"xG
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  = f(x,y)" }}{PARA 4 "" 0 "" {TEXT -1 69 "en el dominio  [a,b]x[c,d] \+
, con una condici\363n de contorno adecuada, " }}{PARA 4 "" 0 "" 
{TEXT -1 26 "y con el ret\355culo habitual" }}{PARA 4 "" 0 "" {TEXT 
-1 4 "    " }{XPPEDIT 18 0 "x[n]" "6#&%\"xG6#%\"nG" }{TEXT -1 18 " = a
 + h n,   h = " }{XPPEDIT 18 0 "(b-a)/N" "6#*&,&%\"bG\"\"\"%\"aG!\"\"F
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\355gase qu\351 orden posee el error de truncaci\363n de dicho m\351to
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