
Ja ho tenim TOT!!
Authored by MARINA AGUDELO
Mathematics
2nd Grade
Used 2+ times

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25 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Quina de les següents matrius mai podrà tenir inversa?
Una matriu d'ordre 2x3
Una matriu diagonal
Una matriu simètrica
Una matriu regular
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Sigui A, B i C matrius de dimensions mxn, nxp i pxm, respectivament. Quin dels següents productes no és possible realitzar?
CA
AB
BC
CB
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Per multiplicar dos matrius és necessari:
que les dues tinguin el mateix número de files.
que el número de columnes de la primera sigui igual al número de files de la segona.
que el número de files de la primera sigui igual al número de columnes de la segona.
que les dues tinguin el mateix número de columnes.
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Què és una matriu fila?
una matriu de dimensions 1xn
una matriu de dimensions mxn
una matriu de dimensions nx1
una matriu de dimensions 1x1
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Si tenim un sistema de dues equacions amb tres incògnites, mai podrà ser:
Incompatible
Homogeni
Compatible indeterminat
Compatible determinat
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Com es diu un sistema que té infinites solucions?
Compatible indeterminat
Incompatible
Homogeni
Compatible determinat
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
La solució del sistema 3x-2y=-2 i x-y=-2 és
(x , y) = (2 , 4)
(x , y) = (4 , -2)
(x , y) = (4 , 2)
(x , y) = (0 , 1)
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