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Andres Ramirez Ejercicios 3 y 8
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TALLER PRIMER SEGUIMIENTO
Autores: ZULY MILENA ALTUVE BERDUGO – 20111170! MARIA "AMILA ES"ALANTE "ARRAS"AL # 2011117002 MANUEL ANDRES $UENTES "UADRADO – 201111700% VANESSA VEGA &ERNANDEZ # 20111170%'
Do(e)te Sign up to vote on this title
Es*+ LEIDER SAL"EDOGAR"IA Useful Not useful
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Andres Ramirez Ejercicios 3 y 8
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TALLER PRIMER SEGUIMIENTO n
| xi| es u) )or+ 1+ Prue.e /ue ‖ x‖1=∑ i =1 Sugerencia: Debe probar que
‖ x‖1
cumpla con los cuatros axiomas de
norma vectorial que son la no negatividad, la nulidad, la homogeneidad y l desigualdad triangular.
Sou(34): n x =⟨ x , x , … , x n ⟩ ∈ R 1
2
y = ⟨ y 1 , y 2 ,… , y n ⟩ ∈ R
1) Primer axioma
n
‖ x‖1 ≥ 0
| x|i ≥ 0 para i =1,2, … ,n
Se sabe que
You're Reading a Preview
De esta manera
| x|1 +| x|2 +…Unlock +| x|n ≥full0 access with a free trial. Download With Free Trial
n
Luego
| x |≥ 0 ∑ = i
i
Por tanto
1
‖ x‖1 ≥ 0
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2) Segundo axioma
‖ x‖1= 0 ↔ x =0⃗
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‖kx‖1=|k |‖ x‖1
3) Tercer axioma
‖kx‖1=‖k ( x 1 , x 2, … x , n )‖1=‖( kx 1 , kx 2, … , kx n )‖1
Tenemos que
n
n
i=1
i=1
|kxi|=∑ |k || x i|=¿|k |∑ | xi|=|k |‖ x‖
1
=
n
¿ ∑ = i 1
4) Cuarto axioma
‖ x + y‖1 ≤‖ x‖1+‖ y‖1
‖ x + y‖1 ≤‖ x‖1+‖ y‖1
Para probar que
, se ace uso de !a desigua!dad de
"in#o$s#%, !a cua! estab!ece que
[∑ [ ] ] [ ∑ [ ] ] [ ∑ [ ] ] 1
n
p p
i =1
n
1
n
p p
x i + y i ≤ xi y i + You're Reading a Preview i =1 i =1
1
p p
Unlock full access with a free trial.
Tenemos que p=1 seg&n !a desigua!dad de "in#o$s#% nos queda' 1 1 Download With Free Trial n n
‖ x + y‖1 ≤
[ ][ [ x ] ∑ = i
1
+
i 1
Por tanto'
[ y ] ∑ = i
i 1
1
]
‖ x + y‖1 ≤‖ x‖1+‖ y‖1 Sign up to vote on this title
La norma
‖ x‖
1
Useful
Not useful ‖ x‖ 1
cump!e con !os cuatro axiomas 1, 2, 3, 4 entonces
una norma (ectoria!
es
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Andres Ramirez Ejercicios 3 y 8
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Pa +)= det + A − λI )
[
A − λI =
[
][ ]
−1 −1 d − 1 − λ −1 d
d
−1 −1
0 1 0
0 0 1
][ ]
−1 − 1 λ 0 0 d −1 − λ 0 λ 0 0 0 λ −1 d
d
A − λI = −1
−1
[
d − λ
A − λI = −1
Sea
1 0 0
−1
− 1 −1 d − λ −1 −1 d − λ
]
n = d − λ , entonces You're Reading a Preview n −1
[
( A − λI )= DET −1trial.n P ( n ( λ ) )= DET Unlock full access with a free
−1 −1
−1 −1 n
]
Download With Free Trial
|
n
P ( n ( λ ))= DET ( A − λI )= −1
−1
|
− 1 −1 n −1 −1 n
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P ( n ( λ ))= n
−1 −(−1 ) −1 −1 +(−1 ) −1 n n −1 n −1 −1
|− | | n
1
| |
|
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1 0− 3 −2|2 242
1210
Se obtiene que' P ( n ( λ ))= n −3 n −2=( n −2 ) ( n + 2 n +1 ) 3
2
2
-actori.ando a
n + 2 n +1
P ( n ( λ ))= n −3 n −2=( n −2 ) ( n + 1 )( n + 1 ) 3
Para a!!ar !os (a!ores caractersticos acemos P ( n ( λ ) )= 0 P ( n ( λ ))= ( n−2 ) ( n + 1 ) ( n + 1 )= 0 You're Reading a Preview
ntonces tenemos
Pero
n = d − λ , entonces
Unlock full access n −2with =0anfree + 1trial. =0
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•
d − λ −2 =0 Sign up to vote on this title
λ 1= d −2
•
d − λ + 1=0
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Andres Ramirez Ejercicios 3 y 8
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ρ ( A )=|d + 1|
n∗n %+ Se A ∊ R u) tr36 3)ert3.e- 5e>3)3os e )?ero 5e (o)53(34
−1 5e A (oo: Con ( A) =‖ A‖‖ A ‖ −1 < Prue.e /ue Con ( A) =Con ( A ) 9 Con ( A ) ≥ 1
Su@ere)(3: Prt 5e e(o /ue 1 ‖ I ‖ + Sou(34): a) ti!i.ando !a deinici/n de n&mero de condici/n se tiene que A
−1
¿ Con ( A ) =‖ A‖‖ A ‖ % ¿ 1 − −1 ‖ Aaccess ‖¿ with a free trial. Con ( Unlock A ) =full You're ¿ Reading a Preview
−1
Download With Free Trial A
Pero se sabe qu0'
−1
¿ ¿ ¿
De esta manera se tiene que'
Con ( A
−1
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) =‖ A− ‖‖ A ‖ Useful 1
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Andres Ramirez Ejercicios 3 y 8
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A
−1
¿ ¿ ¿ −1 ‖ A‖‖ A ‖=‖ A−1‖¿ Demostrando que' Con ( A) =Con ( A
b) De
acuerdo
‖ A‖‖B‖≥‖ AB‖
−1
con
) !a
proposici/n
,se sabe que'
‖ A‖‖ A−1‖≥‖ A A−1‖ Pero tambi0n es conocido e! eco que' You're Reading a Preview −1 A A = I Por !o que' ‖ A A ‖=‖ I ‖ −1
Unlock full access with a free trial.
ntonces'
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‖ A‖‖ A− 1‖≥‖ I ‖ Se p!antea en e! enunciado que
‖ I ‖=1.
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n ese sentido se airma que'
‖ A‖‖ A−1‖≥ 1
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'+ D5 tr36
Andres Ramirez Ejercicios 3 y 8
A =
Search document
[ − ] - 5o)5e 1
ε
1
Slides MetNum u2
1 +ε 1
( )
2 +ε Con ( A ) = )or 3)>3)3t /ue ε
ε ˃0.
Prue.e us)5
2
+
Sou(34):
‖ A‖∞
5nicia!mente procedemos a a!!ar 2
‖ A‖∞= max ∑ |anj|=max j =1
{∑ | 2
j =1
2
a1 j|,
}
|a | ∑ = 2 j
j 1
¿ max {|a11|+|a12| ,|a21|+|a22|} ¿ max {|1|+|1+ ε|,|1− ε|+|1|} 1−ε + 1 }= ¿ max { 1You're + 1 + ε ,Reading max { 2 + ε , 2− ε } a Preview Unlock full access ε a free trial. ¿ 2 +with
Download With Free Trial ‖ A‖∞=2 + ε
Posteriormente a!!amos !a in(ersa de !a matri.' −1
A =
1
de ( A
[) − − ]= −( + ) ( − ) [ d #
" a
1
1
1 ε 1
ε
Sign up to vote on this title 1 Useful −1−ε = 12Not 1useful−1−ε 1 1 ε −1 ε ε −1
] [
]
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Andres Ramirez Ejercicios 3 y 8
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2
‖ A ‖∞= max ∑ |anj|= max −1
Slides MetNum u2
j = 1
{∑ | 2
j = 1
2
a1 j|,
∑= |a
}
|
2 j
j 1
¿ max {|a11|+|a12| ,|a21|+|a22|} ¿ max ¿ max
¿ max
{ + { 1
ε
2
+
+ε
1
ε
,
1
2 ε 2−ε
ε
2
,
ε
2
−ε ε
}
2
+
1
ε
2
{| | | | | | | |} 1
ε
} { =max
1
+
2
−1− ε ε −1
2
,
1
− ε +1
ε
+ε + 1 ε
2
,
ε
ε
2
2
+
1
ε
2
}
= 2 +2ε ε
‖ A− ‖∞= 2 +ε 1
ε
2
You're Reading a Preview
-ina!mente se a!!a e! n&meroUnlock de condici/n' full access with a free trial.
( )
( )
( 2+ε ) 2 + ε Trial Con ( A ) =‖ A‖Download ‖ A−1‖=( 2 +With ε ) Free = = ε2 ε2
Demostrando que'
( )
Con ( A) =
2 +ε
2
+ε
2
ε
2
ε
Sign up to vote on this title
n
de ( A )
2
∏ λ
λ λ , … , λ
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Andres Ramirez Ejercicios 3 y 8
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So!uci/n' Se tiene que'
(¿ λ i− λ ) n
P A ( λ ) = de ( A − λI )=
¿ ∏ = i 1
Cuando λ = 0 '
(¿ λ i− 0 ) n
P A ( 0 )= de ( A − ( 0 ) ( I ) )=
¿ ∏ = i 1
(¿ λi ) n
P A ( 0 )= de ( A ) =
¿ ∏ = i
1
You're Reading a Preview
Demostrando que'
Unlock full access with a free trial. n
∏ =
Download With Trial ( A )= λ de 1 , λ 2 , … , λn i = λFree i 1
+ Su*o)@ /ue os )?eros 1- 2-F- ) so) *ro3(3o)es 1- 2 ) 9 /ue (5 u)o es e H3o error *os3.e 5e E+ Prue.e /ue H3o error *os3.e e) su 1 2 F ) es )E+ Sign up to vote on this title
Se sabe que' E
´ ¿ % %
´ ∈ R %
n
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Andres Ramirez Ejercicios 3 y 8
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7+ A*3/ue e Jto5o 5e *u)to >3Ko *r *ro3r r86
& ( x )=√ x −
Use e or 3)3(3 0 0+C e 3tere st /ue E R ≤ 0.001 + "o)s3@)e o
resut5os o.te)35os e) (5 3ter(34) e) u) t.+ Tr.Ke (o) se 58@3tos 5e *re(3s34)+ Para ap!icar e! m0todo de punto i
√ x − x
1 ¿ x = √ x 2 ¿ x
Para ta! eecto tenemos !as siguientes opciones
=( √ x )2−− ' x = x 2
2
Para dico proceso se!eccionamos g +x) % p!anteamos ormu!a de iteraci/n ( ( x ) =√ x x k = ( ( x k −1) x k =√ x k −1
k
x k = ( ( x k − 1 )
1 2 3 4 B ? > @ A 1 11
>>1? @4@AB A1>3 AB>?2 A>@B>1 A@A22> AA4BA@ AA>2AB AA@?4? AAA322 AAA??
¿ & You're ( x k ) ∨¿Reading a EPreview A =| x k − x k −1|
E R=
E A
Unlock full access with a free trial. 133>@A 2>1? 2A2@A2 >?1@ 133>@A 1BA13 Download With Free Trial 4BAA >?1@ @2AA? 2A?A 4BAA 423A> 1?B? 2A?A 2142@ B3>1 1?B? 1>>2 2?A> B3>1 B41 13B1 2?A> 2>4 Sign up to vote on this title ?>? 13B1 Useful Not useful13B3 33@ ?>? ?>> 1?A 33@ 33@
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Andres Ramirez Ejercicios 3 y 8
Slides MetNum u2
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resut5os o.te)35os 5e (5 3ter(34) e) u) t.+ Tr.Ke (utro 58@3tos 5e *re(3s34)+ Tenemos que a = 1>B % b = 2>B
# o=
a 0 + "0 2
=
1.75 + 2.75 =2.25 2
3 3 3 3 3 3 3 8= x ( √ 8 ) = x 8= x 0= x − 8 & ( x ) = x − 8 √
E A =|# k − # k −1|
k 1 2
ak
# k
"k
& ( ak )
& ( #k )
& ( " k )
|#
1>B 1>B 1>B
22B 2 2
2>B 22B 22B
2?4? 2?4? 2?4?
33A?
12>A?@ 33A? 33A?
Luego de 3 iteraciones +# = 2)You're e! proceso se detiene %a que Readingiterati(o a Preview
E A < 10
De esta manera podemos decir que 2 cero o ra. aproximada de Unlock full access with aes freeun trial. unci/n dada Download With Free Trial
!+ L eo(355 (3 rr3. 5e u) (oete se *ue5e ((ur us)5o s3@u3e)te >oru rr3.-
*
) = * ln
(
m0 m 0− +
)−¿ Do)5e
)
es eo(355 (
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es eo(355 (o) /ue eUseful (o.ust3.e se ret3 Not useful
(oete- m es s 3)3(3 5e (oete e) e t3e*o =0 - + 0
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Andres Ramirez Ejercicios 3 y 8
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(o) 0=26 - tr.Ke (o) o(o < 58@3tos 5e *re(3s34) 9 ter3)e 5 ) ( )=100
3terr st (u)5o
) ( )= * ln
(
m0 m0− +
) ( )=2200 ln
) ( )= 2200 /
(
m .
+
)−¿
|160000| |160000 −2680 |
−9,8
)
428800000
( 160000− 2680 )2
− 9, 8
|160000| |160000− 2680 |
You're Reading a Preview /
) ( )= 2200
(
)−
2680 160000−2680
Unlock 9, 8 full access with a free trial.
Download With Free Trial /
) ( )=
5896000 −9, 8 160000 −2680
ntonces !a /rmu!a de interacci/n es' ( ( k −1 ) = x −
) ( ) = k /
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Andres Ramirez Ejercicios 3 y 8
Slides MetNum u2
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k
k
|) ( k − )|
a =¿| k − k − 1| E ¿
1 2
1>A1>?1B2 >14>@11B
23B41A3411 1A4A3>>>3A
1@@23@4@ >22@34B
1
De acuerdo con !a condici/n inicia!, se detiene e! proceso de iteraci/n en #=2
Con !a anterior tab!a podemos apreciar que e! tiempo en e! cua! !a (e!ocidad ac arriba de! coete supera !os mi! metros es 2? s, tambi0n e! tiempo en que (e!ocidad aciende a 1A4A3>>>3A ms es de >14>@11B s
10+ A*3/ue e Jto5o 5e se()te *r resoer e(u(34) x = (o3e)(e (o) x 0=0
x 1=0.1
9
+ Ter3)e (u)5o
Er ≤ 10
"o)s3@)e os resut5os o.te)35os 5e (5 3ter(34) e) u) t. Tr.Ke (o) (utro 58@3tos 5e *re(3s34)+ − x 2
x =e
You're Reading a Preview Unlock full access with a free trial. − x 2
0 = x −e
Download With Free Trial − x2
& ( x )= x − e x
(¿ ¿ k + 1 −e− x ) & ( k + 1 ) =¿ Sign up to vote on this title 2
k + 1
ntonces !a /rmu!a de interacci/n es'
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Andres Ramirez Ejercicios 3 y 8
Slides MetNum u2
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x k +1
|& (k + 1 )|
Ea
Er
1 2 3 4 B
AAB 2?@A BAA> ?B3 ?B31
4>22 444 A@ 3 4
@AB 2@? 2A2 B33 1
@A 143B 4?@ @1? 1
La ra. de !a ecuaci/n con !a condici/n inicia! es x = ?B31
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