Answer:
Step-by-step explanation:3,360 is your answer
Answer:
(1)
Multiplying by 3 both sides of the equality you get that
3u is in the Span of the vectors 
.
(2)
That's not true, consider the following counter example.
is a linear combination of 
but is NOT a linear combination of 
Step-by-step explanation:
(1)
As the hint indicates, you know that
Then, if you multiply both sides of the equality by 3, you get that
And that's it. 3u is in the Span of the vectors
(2)
That's not true, consider the following counter example.
is a linear combination of but is NOT a linear combination of
Answer:
(a) It is a function.
(b) D = [1,2,3,4,5]
(c) R = [40,80,120,160,200]
Step-by-step explanation:
(a) Is this a function?
Yes, in order to be a function we need two groups, in this case "time in days" and "total cost". From this group the first one is called the domain, while the other one is called range. The elements in the domain can only have one associated element in the range. By this definition the graph displays a function.
(b) What is the domain?
The domain of a function are the numbers which represent the possible input. In this case it is the group of integer numbers from 1 to 5, in order words D = [1, 2, 3, 4, 5].
c) What is the range?
The range is the group which represent the output of the function and in this case it is the group R = [40, 80, 120, 160, 200]
