作业帮帮忙作一道英文的矩阵的题,
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帮忙作一道英文的矩阵的题,
(Factory output and inventory )
A company produces two products,240 watt light globes and 40 watt light globes in two factories.Matrix A describes
output (measured in thousands) for a month from each factory,with row 1 representing the number of 240 watt light
globes and row 2 represents the number of 40 watt light globes.Matrix B gives the output for the second month,and
matrix C gives the combined output for the third and fourth month .
A =
100 65
72 90
B =
60 85
44 124
C =
120 185
100 180
If column 1 in each matrix represents the output from factory 1 and column 2 represents the output from factory 2.
(i) Find a matrix that describes the output for the first 2 week.(ii) Find a matrix that describes the combined
output for the first 4 weeks.
(iii) If matrix D
D =
80 50
56 84
describes the sales made during the first week,find the matrix that describes that the number of units that are added
to inventories at each factory in the first week.(iv) *(question optional (not assessed)) If sales during week 2 are also
described by D,describe the change in inventories at each factory at the end of two weeks.Describe what happened at
factory 1.
(Factory output and inventory )
A company produces two products,240 watt light globes and 40 watt light globes in two factories.Matrix A describes
output (measured in thousands) for a month from each factory,with row 1 representing the number of 240 watt light
globes and row 2 represents the number of 40 watt light globes.Matrix B gives the output for the second month,and
matrix C gives the combined output for the third and fourth month .
A =
100 65
72 90
B =
60 85
44 124
C =
120 185
100 180
If column 1 in each matrix represents the output from factory 1 and column 2 represents the output from factory 2.
(i) Find a matrix that describes the output for the first 2 week.(ii) Find a matrix that describes the combined
output for the first 4 weeks.
(iii) If matrix D
D =
80 50
56 84
describes the sales made during the first week,find the matrix that describes that the number of units that are added
to inventories at each factory in the first week.(iv) *(question optional (not assessed)) If sales during week 2 are also
described by D,describe the change in inventories at each factory at the end of two weeks.Describe what happened at
factory 1.
以30日为1个月的话
第一题答案是 46 30
33 42
第二题 160 144
...抓狂,我不想做下去了,等高手吧
第一题答案是 46 30
33 42
第二题 160 144
...抓狂,我不想做下去了,等高手吧