Recuperação- Avaliação - Eletiva Matemática Básica II
Quiz
•
Mathematics
•
11th Grade
•
Practice Problem
•
Medium
SIRLEIDE SILVA
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12 questions
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1.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Encontre os elemento da matriz A = (aij)2x2 , onde aij= 2i − j. A multiplicação dos elementos da diagonal principal dessa matriz é igual a
- 1
- 5
2
6
2.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
São dadas as matrizes A e B. Sendo C2x2 = 2A - B, a soma de todos os elementos de C tem como resultado
21
29
16
14
3.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Se essas matrizes são iguais, o valor de x+y é
5
3
-5
-8
4.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
O determinante dessa matriz é calculado por det(X)=a2-2.(-1). Os valores de a para que o det(X)=38 são
-2 e 2
-40 e 40
-4 e 4
-6 e 6
5.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Seja a matriz A3x3, onde aij= j2+i2 . A soma dos elementos da diagonal principal dessa matriz resulta em
28
6
15
12
6.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Seja a matriz B=[bij]3x2 cuja lei de formação está informada na imagem. A soma dos elementos dessa matriz vale
20
22
21
23
7.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Dadas as matrizes A e B, calcule o valor da multiplicação de A.B. Marque o resultado correto.
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