Repaso Examen #2 Multiplicacion de matrices

Escoge la contestacion correcta
Realice cada paso en el ejercicio que asi lo requiera.

Halla el producto.

____	1.	
a. | | c. |
b. | | d. |

____	2.	
a. | | c. |
b. | | d. |

____	3.	
a. | | c. | [18]
b. | | d. |

____	4.	
a. | | c. |
b. | | d. |

____	5.	
a. | | c. |
b. | | d. |

____	6.	
a. | | c. |
b. | | d. |

Determina si el producto es posible o no. Si es posible, da las dimensiones de la matriz resultante.

____	7.	
a. | posible; 3 ´ 3 | c. | posible; 2 ´ 3
b. | posible; 2 ´ 1 | d. | no posible

____	8.	
a. | posible; 2 ´ 2 | c. | posible; 1 ´ 2
b. | posible; 2 ´ 1 | d. | no posible

Evalúa el determinante de la matriz.

____	9.	
a. | –19 | b. | 35 | c. | 19 | d. | –35

____	10.	
a. | 54 | b. | –72 | c. | 72 | d. | –54

____	11.	
a. | –86 | b. | 86 | c. | 76 | d. | –76

____	12.	
a. | –34 | b. | 34 | c. | –10 | d. | 10

____	13.	
a. | 106 | b. | 26 | c. | –106 | d. | –26

Repaso Examen #2 Multiplicacion de matrices
Answer Section

MULTIPLE CHOICE

	1.	ANS:	D	PTS:	1	DIF:	L2	REF:	4-3 Matrix Multiplication
OBJ:	4-3.1 Multiplying a Matrix by a Scalar		
NAT:	CC N.VM.6| CC N.VM.7| CC N.VM.8| CC N.VM.9| NAEP N3a	
TOP:	4-3 Example 1			KEY:	scalar | scalar multiplication | matrix

	2.	ANS:	D	PTS:	1	DIF:	L2	REF:	4-3 Matrix Multiplication
OBJ:	4-3.1 Multiplying a Matrix by a Scalar		
NAT:	CC N.VM.6| CC N.VM.7| CC N.VM.8| CC N.VM.9| NAEP N3a	
TOP:	4-3 Example 1			KEY:	scalar | scalar multiplication | matrix

	3.	ANS:	C	PTS:	1	DIF:	L3	REF:	4-3 Matrix Multiplication
OBJ:	4-3.2 Multiplying Matrices	
NAT:	CC N.VM.6| CC N.VM.7| CC N.VM.8| CC N.VM.9| NAEP N3a	
TOP:	4-3 Example 4			KEY:	matrix multiplication | matrix

	4.	ANS:	A	PTS:	1	DIF:	L2	REF:	4-3 Matrix Multiplication
OBJ:	4-3.2 Multiplying Matrices	
NAT:	CC N.VM.6| CC N.VM.7| CC N.VM.8| CC N.VM.9| NAEP N3a	
TOP:	4-3 Example 4			KEY:	matrix multiplication | matrix

	5.	ANS:	D	PTS:	1	DIF:	L2	REF:	4-3 Matrix Multiplication
OBJ:	4-3.2 Multiplying Matrices	
NAT:	CC N.VM.6| CC N.VM.7| CC N.VM.8| CC N.VM.9| NAEP N3a	
TOP:	4-3 Example 4			KEY:	matrix multiplication | matrix

	6.	ANS:	B	PTS:	1	DIF:	L2	REF:	4-3 Matrix Multiplication
OBJ:	4-3.2 Multiplying Matrices	
NAT:	CC N.VM.6| CC N.VM.7| CC N.VM.8| CC N.VM.9| NAEP N3a	
TOP:	4-3 Example 4			KEY:	matrix multiplication | matrix

	7.	ANS:	B	PTS:	1	DIF:	L2	REF:	4-3 Matrix Multiplication
OBJ:	4-3.2 Multiplying Matrices	
NAT:	CC N.VM.6| CC N.VM.7| CC N.VM.8| CC N.VM.9| NAEP N3a	
TOP:	4-3 Example 6			KEY:	dimensions of a matrix | matrix | matrix multiplication

	8.	ANS:	D	PTS:	1	DIF:	L2	REF:	4-3 Matrix Multiplication
OBJ:	4-3.2 Multiplying Matrices	
NAT:	CC N.VM.6| CC N.VM.7| CC N.VM.8| CC N.VM.9| NAEP N3a	
TOP:	4-3 Example 6			KEY:	dimensions of a matrix | matrix | matrix multiplication

	9.	ANS:	D	PTS:	1	DIF:	L2	
REF:	4-5 2 x 2 Matrices, Determinants, and Inverses	
OBJ:	4-5.1 Evaluating Determinants of 2 x 2 Matrices	
NAT:	CC N.VM.10| CC N.VM.12| NAEP N3a| NAEP A4a	TOP:	4-5 Example 2
KEY:	determinant | matrix | 2 x 2 matrix

	10.	ANS:	A	PTS:	1	DIF:	L2	
REF:	4-5 2 x 2 Matrices, Determinants, and Inverses	
OBJ:	4-5.1 Evaluating Determinants of 2 x 2 Matrices	
NAT:	CC N.VM.10| CC N.VM.12| NAEP N3a| NAEP A4a	TOP:	4-5 Example 2
KEY:	determinant | matrix | 2 x 2 matrix

	11.	ANS:	C	PTS:	1	DIF:	L2	
REF:	4-5 2 x 2 Matrices, Determinants, and Inverses	
OBJ:	4-5.1 Evaluating Determinants of 2 x 2 Matrices	
NAT:	CC N.VM.10| CC N.VM.12| NAEP N3a| NAEP A4a	TOP:	4-5 Example 2
KEY:	determinant | matrix | 2 x 2 matrix

	12.	ANS:	D	PTS:	1	DIF:	L3	
REF:	4-5 2 x 2 Matrices, Determinants, and Inverses	
OBJ:	4-5.1 Evaluating Determinants of 2 x 2 Matrices	
NAT:	CC N.VM.10| CC N.VM.12| NAEP N3a| NAEP A4a	KEY:	determinant | 2 x 2 matrix | matrix

	13.	ANS:	D	PTS:	1	DIF:	L3	
REF:	4-5 2 x 2 Matrices, Determinants, and Inverses	
OBJ:	4-5.1 Evaluating Determinants of 2 x 2 Matrices	
NAT:	CC N.VM.10| CC N.VM.12| NAEP N3a| NAEP A4a	KEY:	determinant | 2 x 2 matrix | matrix