
Recuperação de Matemática
Authored by RENATA CAMPOS DA SILVA
Mathematics
10th Grade
Used 3+ times

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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
Se multiplicarmos uma matriz quadrada de ordem 2 pelo número 2 obteremos:
uma matriz quadrada de ordem 4
uma matriz quadrada de ordem 2 onde todos os elementos da nova matriz representam a metade da matriz inicia
uma matriz quadrada de ordem 2 onde todos os elementos da nova matriz representam o dobro da matriz inicial
uma matriz de ordem 2 x 4
2.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
Ao efetuar a multiplicação 3 . (-6 12 3) , obtemos:
a) (–18 36 9)
b) 18 36 9
c) (–2 4 1)
d) (18 36 -9)
3.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
Dadas as seguintes matrizes,
A 2X1 B 3X3 C 1X3 D 3X2
marque a opção que indica apenas produtos possíveis.
a) C.A , B.A , A.D
b) D.B , D.C , A.D
c) A.C , D.A , C.D
d) B.A , A.B , D.C
4.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
Qual o resultado da multiplicação:
621
326
246
246
621
326
5.
OPEN ENDED QUESTION
3 mins • 10 pts
Pesquise um sistema linear 3x3 resolvido pelo método de Cramer e explique os passos de resolução.
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