
Conocimientos previos
Authored by Maria Cuadrado
Mathematics
University
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10 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Sean A y B dos matrices cualesquiera. Señala la respuesta correcta
AB=BA
(AB)2=A2B2
(A+B)2=A2+2AB+B2
(A+B)2=A2+AB+BA+B2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Señala la repuesta correcta
ad-cb ≠ 0
ad-cb = 0
Sólo cuando a=c y b=d
Sólo cuando a=d y c=b
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
El valor del siguiente determinante es
3t-12t-1
3t-12t
3t-1+2t-1
3t2t-1
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Sea A una matriz cualquiera y sea At su traspuesta. Señala la respuesta INCORRECTA
La matriz AAt siempre está definida
La matriz AtA siempre está definida
La matriz A(AtA) siempre está definida
Para que la matriz AAt esté definida, A debe ser cuadrada
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
El valor del siguiente determinante es
2
-2
1
-1
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
La expresión a5a2b3 es igual a
a10b3
(ab)10
a7b3
(ab)30
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Sea A una matriz de orden 3x3 y sea |A| su determinante. Entonces, el valor de |2A| es:
6|A|
2|A|
8|A|
3|A|
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