SOLUTION: the components of v=2401+300j represent the respective number of one-day and three day videos rented from a video store . The components of w=31 +2j repesent the prices to rent the

Algebra ->  Algebra  -> Trigonometry-basics -> SOLUTION: the components of v=2401+300j represent the respective number of one-day and three day videos rented from a video store . The components of w=31 +2j repesent the prices to rent the      Log On

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Question 400577: the components of v=2401+300j represent the respective number of one-day and three day videos rented from a video store . The components of w=31 +2j repesent the prices to rent the one-day and three-day videos, respectively. find v8 w and describe what the answer means in practical terms
Found 2 solutions by josmiceli, lonelygirl476:
Answer by josmiceli(7366) About Me  (Show Source):
You can put this solution on YOUR website!
The product v%2Aw represents the income from sales of videos
(price/video) x (number of videos) = total income
v%2Aw+=+%282401+%2B+300j%29%2A%2831+%2B+2j%29
v%2Aw+=+74431+%2B+9300j+%2B+4802j++%2B+600%2Aj%5E2
v%2Aw+=+74431+-+600+%2B+14102j
v%2Aw+=+73831+%2B+14102j
In practical terms, there are amplitudes input and
an amplitude output
sqrt%28%2873831%29%5E2+%2B+%2814102%29%5E2%29 is the total income

Answer by lonelygirl476(1) About Me  (Show Source):
You can put this solution on YOUR website!
assuming that * means the dot product, then this represents the total revenue 180(3) + 450(2) = 540 + 900 = 1440