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3Opción 3.1

2,5 puntos

Responda únicamente a una de las dos opciones, o bien 3.1 o bien 3.2.

Considere las siguientes matrices:A=(1/213/211/213/211/2)A = \begin{pmatrix}1/2 & 1 & 3/2 \\ 1 & 1/2 & 1 \\ 3/2 & 1 & 1/2\end{pmatrix}y B=(10001/20001/4).\text{y } B = \begin{pmatrix}1 & 0 & 0 \\ 0 & 1/2 & 0 \\ 0 & 0 & 1/4\end{pmatrix}.
a
Calcule la matriz XX en la ecuación matricial AXB=A+BAXB = A+B.1,5 pts
b
Calcule el determinante ∣C2B∣|C^2 B|, siendo C=2(A−1)tC = 2(A^{-1})^t Nota: MtM^t denota la matriz traspuesta de la matriz MM.1 pt

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ÁREAS BAJO LA DISTRIBUCIÓN DE PROBABILIDAD NORMAL ESTÁNDAR Los valores en la tabla representan el área bajo la curva normal hasta un valor positivo de zz.
Área bajo la curva normal hasta un valor positivo de z Campana normal simétrica con el área sombreada a la izquierda de z. Ejes con marcas sin valores numéricos. z
zz,00{,}00,01{,}01,02{,}02,03{,}03,04{,}04,05{,}05,06{,}06,07{,}07,08{,}08,09{,}09
0,00,50000,50400,50800,51200,51600,51990,52390,52790,53190,5359
0,10,53980,54380,54780,55170,55570,55960,56360,56750,57140,5753
0,20,57930,58320,58710,59100,59480,59870,60260,60640,61030,6141
0,30,61790,62170,62550,62930,63310,63680,64060,64430,64800,6517
0,40,65540,65910,66280,66640,67000,67360,67720,68080,68440,6879
0,50,69150,69500,69850,70190,70540,70880,71230,71570,71900,7224
0,60,72570,72910,73240,73570,73890,74220,74540,74860,75170,7549
0,70,75800,76110,76420,76730,77030,77340,77640,77940,78230,7852
0,80,78810,79100,79390,79670,79950,80230,80510,80780,81060,8133
0,90,81590,81860,82120,82380,82640,82890,83150,83400,83650,8389
1,00,84130,84380,84610,84850,85080,85310,85540,85770,85990,8621
1,10,86430,86650,86860,87080,87290,87490,87700,87900,88100,8830
1,20,88490,88690,88880,89070,89250,89440,89620,89800,89970,9015
1,30,90320,90490,90660,90820,90990,91150,91310,91470,91620,9177
1,40,91920,92070,92220,92360,92510,92650,92790,92920,93060,9319
1,50,93320,93450,93570,93700,93820,93940,94060,94180,94290,9441
1,60,94520,94630,94740,94840,94950,95050,95150,95250,95350,9545
1,70,95540,95640,95730,95820,95910,95990,96080,96160,96250,9633
1,80,96410,96490,96560,96640,96710,96780,96860,96930,96990,9706
1,90,97130,97190,97260,97320,97380,97440,97500,97560,97610,9767
2,00,97720,97780,97830,97880,97930,97980,98030,98080,98120,9817
2,10,98210,98260,98300,98340,98380,98420,98460,98500,98540,9857
2,20,98610,98640,98680,98710,98750,98780,98810,98840,98870,9890
2,30,98930,98960,98980,99010,99040,99060,99090,99110,99130,9916
2,40,99180,99200,99220,99250,99270,99290,99310,99320,99340,9936
2,50,99380,99400,99410,99430,99450,99460,99480,99490,99510,9952
2,60,99530,99540,99560,99570,99590,99600,99610,99620,99630,9964
2,70,99650,99660,99670,99680,99690,99700,99710,99720,99730,9974
2,80,99740,99750,99760,99770,99770,99780,99790,99790,99800,9981
2,90,99810,99820,99820,99830,99840,99840,99850,99850,99860,9986
3,00,99870,99870,99870,99880,99880,99890,99890,99890,99900,9990