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{SECT 0 {EXCHG {PARA 4 "" 0 "" {TEXT 256 14 "Ejercicios de " }}{PARA 
4 "" 0 "" {TEXT 258 31 "(12) Las Ecuaciones parab\363licas" }}{PARA 4 
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" }}{PARA 4 "" 0 "" {TEXT -1 24 "\n\nSe considera la matriz" }}{PARA 
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#%'lambdaG" }{TEXT -1 12 "      1 - 2 " }{XPPEDIT 18 0 "lambda" "6#%'l
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            .            .               | " }}{PARA 4 "" 0 "" {TEXT 
-1 66 "del mismo tama\361o. Esta es la matriz del m\351todo de las 'di
ferencias" }}{PARA 4 "" 0 "" {TEXT -1 43 "hacia adelante' para problem
as parab\363licos." }}{PARA 4 "" 0 "" {TEXT -1 46 "a) Pru\351bese que \+
los valores propios de  B  son" }}{PARA 4 "" 0 "" {TEXT -1 13 "   2 - \+
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68 "b) Calc\372lense as\355 los valores propios y tambi\351n los vecto
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